diff --git a/Content.Client/Lobby/ClientPreferencesManager.cs b/Content.Client/Lobby/ClientPreferencesManager.cs
index 63a12a99bf2..daa522ab611 100644
--- a/Content.Client/Lobby/ClientPreferencesManager.cs
+++ b/Content.Client/Lobby/ClientPreferencesManager.cs
@@ -44,7 +44,7 @@ namespace Content.Client.Lobby
             }
         }
 
-        public void SelectCharacter(ICharacterProfile profile)
+        public void SelectCharacter(HumanoidCharacterProfile profile)
         {
             SelectCharacter(Preferences.IndexOfCharacter(profile));
         }
@@ -59,11 +59,11 @@ namespace Content.Client.Lobby
             _netManager.ClientSendMessage(msg);
         }
 
-        public void UpdateCharacter(ICharacterProfile profile, int slot)
+        public void UpdateCharacter(HumanoidCharacterProfile profile, int slot)
         {
             var collection = IoCManager.Instance!;
             profile.EnsureValid(_playerManager.LocalSession!, collection);
-            var characters = new Dictionary<int, ICharacterProfile>(Preferences.Characters) {[slot] = profile};
+            var characters = new Dictionary<int, HumanoidCharacterProfile>(Preferences.Characters) {[slot] = profile};
             Preferences = new PlayerPreferences(characters, Preferences.SelectedCharacterIndex, Preferences.AdminOOCColor, Preferences.ConstructionFavorites);
             var msg = new MsgUpdateCharacter
             {
@@ -73,9 +73,9 @@ namespace Content.Client.Lobby
             _netManager.ClientSendMessage(msg);
         }
 
-        public void CreateCharacter(ICharacterProfile profile)
+        public void CreateCharacter(HumanoidCharacterProfile profile)
         {
-            var characters = new Dictionary<int, ICharacterProfile>(Preferences.Characters);
+            var characters = new Dictionary<int, HumanoidCharacterProfile>(Preferences.Characters);
             var lowest = Enumerable.Range(0, Settings.MaxCharacterSlots)
                 .Except(characters.Keys)
                 .FirstOrNull();
@@ -92,7 +92,7 @@ namespace Content.Client.Lobby
             UpdateCharacter(profile, l);
         }
 
-        public void DeleteCharacter(ICharacterProfile profile)
+        public void DeleteCharacter(HumanoidCharacterProfile profile)
         {
             DeleteCharacter(Preferences.IndexOfCharacter(profile));
         }
diff --git a/Content.Client/Lobby/IClientPreferencesManager.cs b/Content.Client/Lobby/IClientPreferencesManager.cs
index c9b58d632cf..30b518cf519 100644
--- a/Content.Client/Lobby/IClientPreferencesManager.cs
+++ b/Content.Client/Lobby/IClientPreferencesManager.cs
@@ -13,11 +13,11 @@ namespace Content.Client.Lobby
         GameSettings? Settings { get; }
         PlayerPreferences? Preferences { get; }
         void Initialize();
-        void SelectCharacter(ICharacterProfile profile);
+        void SelectCharacter(HumanoidCharacterProfile profile);
         void SelectCharacter(int slot);
-        void UpdateCharacter(ICharacterProfile profile, int slot);
-        void CreateCharacter(ICharacterProfile profile);
-        void DeleteCharacter(ICharacterProfile profile);
+        void UpdateCharacter(HumanoidCharacterProfile profile, int slot);
+        void CreateCharacter(HumanoidCharacterProfile profile);
+        void DeleteCharacter(HumanoidCharacterProfile profile);
         void DeleteCharacter(int slot);
         void UpdateConstructionFavorites(List<ProtoId<ConstructionPrototype>> favorites);
     }
diff --git a/Content.Client/Lobby/UI/CharacterPickerButton.xaml.cs b/Content.Client/Lobby/UI/CharacterPickerButton.xaml.cs
index cf05c4b4482..432b8e76754 100644
--- a/Content.Client/Lobby/UI/CharacterPickerButton.xaml.cs
+++ b/Content.Client/Lobby/UI/CharacterPickerButton.xaml.cs
@@ -30,7 +30,7 @@ public sealed partial class CharacterPickerButton : ContainerButton
         IPrototypeManager prototypeManager,
         ISharedPlayerManager playerMan,
         ButtonGroup group,
-        ICharacterProfile profile,
+        HumanoidCharacterProfile profile,
         bool isSelected)
     {
         RobustXamlLoader.Load(this);
@@ -41,15 +41,11 @@ public sealed partial class CharacterPickerButton : ContainerButton
 
         View.LoadPreview(profile);
 
-        if (profile is HumanoidCharacterProfile humanoid)
+        var highPriorityJob = profile.JobPriorities.SingleOrDefault(p => p.Value == JobPriority.High).Key;
+        if (highPriorityJob != default)
         {
-
-            var highPriorityJob = humanoid.JobPriorities.SingleOrDefault(p => p.Value == JobPriority.High).Key;
-            if (highPriorityJob != default)
-            {
-                var jobName = prototypeManager.Index(highPriorityJob).LocalizedName;
-                description = $"{description}\n{jobName}";
-            }
+            var jobName = prototypeManager.Index(highPriorityJob).LocalizedName;
+            description = $"{description}\n{jobName}";
         }
 
         Pressed = isSelected;
diff --git a/Content.Client/Lobby/UI/ProfileEditorControls/ProfilePreviewSpriteView.cs b/Content.Client/Lobby/UI/ProfileEditorControls/ProfilePreviewSpriteView.cs
index 7f834ecf3a3..7f3a12a7cc1 100644
--- a/Content.Client/Lobby/UI/ProfileEditorControls/ProfilePreviewSpriteView.cs
+++ b/Content.Client/Lobby/UI/ProfileEditorControls/ProfilePreviewSpriteView.cs
@@ -27,19 +27,12 @@ public sealed partial class ProfilePreviewSpriteView : SpriteView
     /// <remarks>
     /// This is expensive so not recommended to run if you have a slider.
     /// </remarks>
-    public void LoadPreview(ICharacterProfile profile, JobPrototype? jobOverride = null, bool showClothes = true)
+    public void LoadPreview(HumanoidCharacterProfile profile, JobPrototype? jobOverride = null, bool showClothes = true)
     {
         EntMan.DeleteEntity(PreviewDummy);
         PreviewDummy = EntityUid.Invalid;
 
-        switch (profile)
-        {
-            case HumanoidCharacterProfile humanoid:
-                LoadHumanoidEntity(humanoid, jobOverride, showClothes);
-                break;
-            default:
-                throw new ArgumentException("Only humanoid profiles are implemented in ProfilePreviewSpriteView");
-        }
+        LoadHumanoidEntity(profile, jobOverride, showClothes);
 
         SetEntity(PreviewDummy);
         SetName(profile.Name);
@@ -56,16 +49,9 @@ public sealed partial class ProfilePreviewSpriteView : SpriteView
     /// <summary>
     /// A slim reload that only updates the entity itself and not any of the job entities, etc.
     /// </summary>
-    public void ReloadProfilePreview(ICharacterProfile profile)
+    public void ReloadProfilePreview(HumanoidCharacterProfile profile)
     {
-        switch (profile)
-        {
-            case HumanoidCharacterProfile humanoid:
-                ReloadHumanoidEntity(humanoid);
-                break;
-            default:
-                throw new ArgumentException("Only humanoid profiles are implemented in ProfilePreviewSpriteView");
-        }
+        ReloadHumanoidEntity(profile);
     }
 
     public void ClearPreview()
diff --git a/Content.IntegrationTests/Tests/Lobby/CharacterCreationTest.cs b/Content.IntegrationTests/Tests/Lobby/CharacterCreationTest.cs
index a940df82d24..2fa3c9961c4 100644
--- a/Content.IntegrationTests/Tests/Lobby/CharacterCreationTest.cs
+++ b/Content.IntegrationTests/Tests/Lobby/CharacterCreationTest.cs
@@ -75,17 +75,11 @@ public sealed class CharacterCreationTest
         await pair.CleanReturnAsync();
     }
 
-    private void AssertEqual(ICharacterProfile clientCharacter, HumanoidCharacterProfile b)
+    private void AssertEqual(HumanoidCharacterProfile a, HumanoidCharacterProfile b)
     {
-        if (clientCharacter.MemberwiseEquals(b))
+        if (a.MemberwiseEquals(b))
             return;
 
-        if (clientCharacter is not HumanoidCharacterProfile a)
-        {
-            Assert.Fail($"Not a {nameof(HumanoidCharacterProfile)}");
-            return;
-        }
-
         Assert.Multiple(() =>
         {
             Assert.That(a.Name, Is.EqualTo(b.Name));
@@ -107,7 +101,7 @@ public sealed class CharacterCreationTest
 
     private void AssertEqual(HumanoidCharacterAppearance a, HumanoidCharacterAppearance b)
     {
-        if (a.MemberwiseEquals(b))
+        if (a.Equals(b))
             return;
 
         Assert.That(a.EyeColor, Is.EqualTo(b.EyeColor));
diff --git a/Content.Server/Database/ServerDbBase.cs b/Content.Server/Database/ServerDbBase.cs
index ec463012354..eee17bdef87 100644
--- a/Content.Server/Database/ServerDbBase.cs
+++ b/Content.Server/Database/ServerDbBase.cs
@@ -66,7 +66,7 @@ namespace Content.Server.Database
                 return null;
 
             var maxSlot = prefs.Profiles.Max(p => p.Slot) + 1;
-            var profiles = new Dictionary<int, ICharacterProfile>(maxSlot);
+            var profiles = new Dictionary<int, HumanoidCharacterProfile>(maxSlot);
             foreach (var profile in prefs.Profiles)
             {
                 profiles[profile.Slot] = await ConvertProfiles(profile);
@@ -88,23 +88,17 @@ namespace Content.Server.Database
             await db.DbContext.SaveChangesAsync();
         }
 
-        public async Task SaveCharacterSlotAsync(NetUserId userId, ICharacterProfile? profile, int slot)
+        public async Task SaveCharacterSlotAsync(NetUserId userId, HumanoidCharacterProfile? humanoid, int slot)
         {
             await using var db = await GetDb();
 
-            if (profile is null)
+            if (humanoid is null)
             {
                 await DeleteCharacterSlot(db.DbContext, userId, slot);
                 await db.DbContext.SaveChangesAsync();
                 return;
             }
 
-            if (profile is not HumanoidCharacterProfile humanoid)
-            {
-                // TODO: Handle other ICharacterProfile implementations properly
-                throw new NotImplementedException();
-            }
-
             var oldProfile = db.DbContext.Profile
                 .Include(p => p.Preference)
                 .Where(p => p.Preference.UserId == userId.UserId)
@@ -145,7 +139,7 @@ namespace Content.Server.Database
             db.Profile.Remove(profile);
         }
 
-        public async Task<PlayerPreferences> InitPrefsAsync(NetUserId userId, ICharacterProfile defaultProfile)
+        public async Task<PlayerPreferences> InitPrefsAsync(NetUserId userId, HumanoidCharacterProfile defaultProfile)
         {
             await using var db = await GetDb();
 
@@ -164,7 +158,7 @@ namespace Content.Server.Database
 
             await db.DbContext.SaveChangesAsync();
 
-            return new PlayerPreferences(new[] { new KeyValuePair<int, ICharacterProfile>(0, defaultProfile) }, 0, Color.FromHex(prefs.AdminOOCColor), []);
+            return new PlayerPreferences(new[] { new KeyValuePair<int, HumanoidCharacterProfile>(0, defaultProfile) }, 0, Color.FromHex(prefs.AdminOOCColor), []);
         }
 
         public async Task DeleteSlotAndSetSelectedIndex(NetUserId userId, int deleteSlot, int newSlot)
@@ -336,7 +330,7 @@ namespace Content.Server.Database
         private Profile ConvertProfiles(HumanoidCharacterProfile humanoid, int slot, Profile? profile = null)
         {
             profile ??= new Profile();
-            var appearance = (HumanoidCharacterAppearance) humanoid.CharacterAppearance;
+            var appearance = humanoid.Appearance;
             var dataNode = _serialization.WriteValue(appearance.Markings, alwaysWrite: true, notNullableOverride: true);
 
             profile.CharacterName = humanoid.Name;
diff --git a/Content.Server/Database/ServerDbManager.cs b/Content.Server/Database/ServerDbManager.cs
index 9231ef5d753..44479b133c0 100644
--- a/Content.Server/Database/ServerDbManager.cs
+++ b/Content.Server/Database/ServerDbManager.cs
@@ -38,12 +38,12 @@ namespace Content.Server.Database
         #region Preferences
         Task<PlayerPreferences> InitPrefsAsync(
             NetUserId userId,
-            ICharacterProfile defaultProfile,
+            HumanoidCharacterProfile defaultProfile,
             CancellationToken cancel);
 
         Task SaveSelectedCharacterIndexAsync(NetUserId userId, int index);
 
-        Task SaveCharacterSlotAsync(NetUserId userId, ICharacterProfile? profile, int slot);
+        Task SaveCharacterSlotAsync(NetUserId userId, HumanoidCharacterProfile? profile, int slot);
 
         Task SaveAdminOOCColorAsync(NetUserId userId, Color color);
 
@@ -428,7 +428,7 @@ namespace Content.Server.Database
 
         public Task<PlayerPreferences> InitPrefsAsync(
             NetUserId userId,
-            ICharacterProfile defaultProfile,
+            HumanoidCharacterProfile defaultProfile,
             CancellationToken cancel)
         {
             DbWriteOpsMetric.Inc();
@@ -441,7 +441,7 @@ namespace Content.Server.Database
             return RunDbCommand(() => _db.SaveSelectedCharacterIndexAsync(userId, index));
         }
 
-        public Task SaveCharacterSlotAsync(NetUserId userId, ICharacterProfile? profile, int slot)
+        public Task SaveCharacterSlotAsync(NetUserId userId, HumanoidCharacterProfile? profile, int slot)
         {
             DbWriteOpsMetric.Inc();
             return RunDbCommand(() => _db.SaveCharacterSlotAsync(userId, profile, slot));
diff --git a/Content.Server/Preferences/Managers/IServerPreferencesManager.cs b/Content.Server/Preferences/Managers/IServerPreferencesManager.cs
index ed6f2b17e64..15620c462ec 100644
--- a/Content.Server/Preferences/Managers/IServerPreferencesManager.cs
+++ b/Content.Server/Preferences/Managers/IServerPreferencesManager.cs
@@ -20,10 +20,10 @@ namespace Content.Server.Preferences.Managers
         bool TryGetCachedPreferences(NetUserId userId, [NotNullWhen(true)] out PlayerPreferences? playerPreferences);
         PlayerPreferences GetPreferences(NetUserId userId);
         PlayerPreferences? GetPreferencesOrNull(NetUserId? userId);
-        IEnumerable<KeyValuePair<NetUserId, ICharacterProfile>> GetSelectedProfilesForPlayers(List<NetUserId> userIds);
+        IEnumerable<KeyValuePair<NetUserId, HumanoidCharacterProfile>> GetSelectedProfilesForPlayers(List<NetUserId> userIds);
         bool HavePreferencesLoaded(ICommonSession session);
 
-        Task SetProfile(NetUserId userId, int slot, ICharacterProfile profile);
+        Task SetProfile(NetUserId userId, int slot, HumanoidCharacterProfile profile);
         Task SetConstructionFavorites(NetUserId userId, List<ProtoId<ConstructionPrototype>> favorites);
     }
 }
diff --git a/Content.Server/Preferences/Managers/ServerPreferencesManager.cs b/Content.Server/Preferences/Managers/ServerPreferencesManager.cs
index 10380f6b7fc..4cde984254f 100644
--- a/Content.Server/Preferences/Managers/ServerPreferencesManager.cs
+++ b/Content.Server/Preferences/Managers/ServerPreferencesManager.cs
@@ -91,7 +91,7 @@ namespace Content.Server.Preferences.Managers
                 await SetProfile(userId, message.Slot, message.Profile);
         }
 
-        public async Task SetProfile(NetUserId userId, int slot, ICharacterProfile profile)
+        public async Task SetProfile(NetUserId userId, int slot, HumanoidCharacterProfile profile)
         {
             if (!_cachedPlayerPrefs.TryGetValue(userId, out var prefsData) || !prefsData.PrefsLoaded)
             {
@@ -107,7 +107,7 @@ namespace Content.Server.Preferences.Managers
 
             profile.EnsureValid(session, _dependencies);
 
-            var profiles = new Dictionary<int, ICharacterProfile>(curPrefs.Characters)
+            var profiles = new Dictionary<int, HumanoidCharacterProfile>(curPrefs.Characters)
             {
                 [slot] = profile
             };
@@ -168,7 +168,7 @@ namespace Content.Server.Preferences.Managers
                 nextSlot = ns;
             }
 
-            var arr = new Dictionary<int, ICharacterProfile>(curPrefs.Characters);
+            var arr = new Dictionary<int, HumanoidCharacterProfile>(curPrefs.Characters);
             arr.Remove(slot);
 
             prefsData.Prefs = new PlayerPreferences(arr, nextSlot ?? curPrefs.SelectedCharacterIndex, curPrefs.AdminOOCColor, curPrefs.ConstructionFavorites);
@@ -230,7 +230,7 @@ namespace Content.Server.Preferences.Managers
                 {
                     PrefsLoaded = true,
                     Prefs = new PlayerPreferences(
-                        new[] { new KeyValuePair<int, ICharacterProfile>(0, HumanoidCharacterProfile.Random()) },
+                        new[] { new KeyValuePair<int, HumanoidCharacterProfile>(0, HumanoidCharacterProfile.Random()) },
                         0, Color.Transparent, [])
                 };
 
@@ -349,17 +349,17 @@ namespace Content.Server.Preferences.Managers
 
             return new PlayerPreferences(prefs.Characters.Select(p =>
             {
-                return new KeyValuePair<int, ICharacterProfile>(p.Key, p.Value.Validated(session, collection));
+                return new KeyValuePair<int, HumanoidCharacterProfile>(p.Key, p.Value.Validated(session, collection));
             }), prefs.SelectedCharacterIndex, prefs.AdminOOCColor, prefs.ConstructionFavorites);
         }
 
-        public IEnumerable<KeyValuePair<NetUserId, ICharacterProfile>> GetSelectedProfilesForPlayers(
+        public IEnumerable<KeyValuePair<NetUserId, HumanoidCharacterProfile>> GetSelectedProfilesForPlayers(
             List<NetUserId> usernames)
         {
             return usernames
                 .Select(p => (_cachedPlayerPrefs[p].Prefs, p))
                 .Where(p => p.Prefs != null)
-                .Select(p => new KeyValuePair<NetUserId, ICharacterProfile>(p.p, p.Prefs!.SelectedCharacter));
+                .Select(p => new KeyValuePair<NetUserId, HumanoidCharacterProfile>(p.p, p.Prefs!.SelectedCharacter));
         }
 
         internal static bool ShouldStorePrefs(LoginType loginType)
diff --git a/Content.Shared/Humanoid/HumanoidCharacterAppearance.cs b/Content.Shared/Humanoid/HumanoidCharacterAppearance.cs
index 734f0b8b6aa..e9b1f0a076e 100644
--- a/Content.Shared/Humanoid/HumanoidCharacterAppearance.cs
+++ b/Content.Shared/Humanoid/HumanoidCharacterAppearance.cs
@@ -12,7 +12,7 @@ namespace Content.Shared.Humanoid;
 
 [DataDefinition]
 [Serializable, NetSerializable]
-public sealed partial class HumanoidCharacterAppearance : ICharacterAppearance, IEquatable<HumanoidCharacterAppearance>
+public sealed partial class HumanoidCharacterAppearance : IEquatable<HumanoidCharacterAppearance>
 {
     [DataField]
     public Color EyeColor { get; set; } = Color.Black;
@@ -158,15 +158,6 @@ public sealed partial class HumanoidCharacterAppearance : ICharacterAppearance,
             validatedMarkings);
     }
 
-    public bool MemberwiseEquals(ICharacterAppearance maybeOther)
-    {
-        if (maybeOther is not HumanoidCharacterAppearance other) return false;
-        if (!EyeColor.Equals(other.EyeColor)) return false;
-        if (!SkinColor.Equals(other.SkinColor)) return false;
-        if (!MarkingManager.MarkingsAreEqual(Markings, other.Markings)) return false;
-        return true;
-    }
-
     public bool Equals(HumanoidCharacterAppearance? other)
     {
         if (ReferenceEquals(null, other)) return false;
diff --git a/Content.Shared/Humanoid/ICharacterAppearance.cs b/Content.Shared/Humanoid/ICharacterAppearance.cs
deleted file mode 100644
index 517df7fb493..00000000000
--- a/Content.Shared/Humanoid/ICharacterAppearance.cs
+++ /dev/null
@@ -1,8 +0,0 @@
-
-namespace Content.Shared.Humanoid
-{
-    public interface ICharacterAppearance
-    {
-        bool MemberwiseEquals(ICharacterAppearance other);
-    }
-}
diff --git a/Content.Shared/Preferences/HumanoidCharacterProfile.cs b/Content.Shared/Preferences/HumanoidCharacterProfile.cs
index a1990fa42e3..7dfd21e7182 100644
--- a/Content.Shared/Preferences/HumanoidCharacterProfile.cs
+++ b/Content.Shared/Preferences/HumanoidCharacterProfile.cs
@@ -28,7 +28,7 @@ namespace Content.Shared.Preferences
     /// </summary>
     [DataDefinition]
     [Serializable, NetSerializable]
-    public sealed partial class HumanoidCharacterProfile : ICharacterProfile
+    public sealed partial class HumanoidCharacterProfile
     {
         public static readonly ProtoId<SpeciesPrototype> DefaultSpecies = "Human";
         private static readonly Regex RestrictedNameRegex = new(@"[^A-Za-z0-9 '\-]");
@@ -89,11 +89,6 @@ namespace Content.Shared.Preferences
         [DataField]
         public Gender Gender { get; private set; } = Gender.Male;
 
-        /// <summary>
-        /// <see cref="Appearance"/>
-        /// </summary>
-        public ICharacterAppearance CharacterAppearance => Appearance;
-
         /// <summary>
         /// Stores markings, eye colors, etc for the profile.
         /// </summary>
@@ -465,9 +460,8 @@ namespace Content.Shared.Preferences
                 ("age", Age)
             );
 
-        public bool MemberwiseEquals(ICharacterProfile maybeOther)
+        public bool MemberwiseEquals(HumanoidCharacterProfile other)
         {
-            if (maybeOther is not HumanoidCharacterProfile other) return false;
             if (Name != other.Name) return false;
             if (Age != other.Age) return false;
             if (Sex != other.Sex) return false;
@@ -480,7 +474,7 @@ namespace Content.Shared.Preferences
             if (!_traitPreferences.SequenceEqual(other._traitPreferences)) return false;
             if (!Loadouts.SequenceEqual(other.Loadouts)) return false;
             if (FlavorText != other.FlavorText) return false;
-            return Appearance.MemberwiseEquals(other.Appearance);
+            return Appearance.Equals(other.Appearance);
         }
 
         public void EnsureValid(ICommonSession session, IDependencyCollection collection)
@@ -692,7 +686,7 @@ namespace Content.Shared.Preferences
             return result;
         }
 
-        public ICharacterProfile Validated(ICommonSession session, IDependencyCollection collection)
+        public HumanoidCharacterProfile Validated(ICommonSession session, IDependencyCollection collection)
         {
             var profile = new HumanoidCharacterProfile(this);
             profile.EnsureValid(session, collection);
diff --git a/Content.Shared/Preferences/ICharacterProfile.cs b/Content.Shared/Preferences/ICharacterProfile.cs
deleted file mode 100644
index 3e7dbc41588..00000000000
--- a/Content.Shared/Preferences/ICharacterProfile.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-using Content.Shared.Humanoid;
-using Robust.Shared.Configuration;
-using Robust.Shared.Player;
-using Robust.Shared.Prototypes;
-
-namespace Content.Shared.Preferences
-{
-    public interface ICharacterProfile
-    {
-        string Name { get; }
-
-        ICharacterAppearance CharacterAppearance { get; }
-
-        bool MemberwiseEquals(ICharacterProfile other);
-
-        /// <summary>
-        ///     Makes this profile valid so there's no bad data like negative ages.
-        /// </summary>
-        void EnsureValid(ICommonSession session, IDependencyCollection collection);
-
-        /// <summary>
-        /// Gets a copy of this profile that has <see cref="EnsureValid"/> applied, i.e. no invalid data.
-        /// </summary>
-        ICharacterProfile Validated(ICommonSession session, IDependencyCollection collection);
-    }
-}
diff --git a/Content.Shared/Preferences/MsgUpdateCharacter.cs b/Content.Shared/Preferences/MsgUpdateCharacter.cs
index 3c4af1833ed..decb0182228 100644
--- a/Content.Shared/Preferences/MsgUpdateCharacter.cs
+++ b/Content.Shared/Preferences/MsgUpdateCharacter.cs
@@ -13,7 +13,7 @@ namespace Content.Shared.Preferences
         public override MsgGroups MsgGroup => MsgGroups.Command;
 
         public int Slot;
-        public ICharacterProfile Profile = default!;
+        public HumanoidCharacterProfile Profile = default!;
 
         public override void ReadFromBuffer(NetIncomingMessage buffer, IRobustSerializer serializer)
         {
@@ -21,7 +21,7 @@ namespace Content.Shared.Preferences
             var length = buffer.ReadVariableInt32();
             using var stream = new MemoryStream(length);
             buffer.ReadAlignedMemory(stream, length);
-            Profile = serializer.Deserialize<ICharacterProfile>(stream);
+            Profile = serializer.Deserialize<HumanoidCharacterProfile>(stream);
         }
 
         public override void WriteToBuffer(NetOutgoingMessage buffer, IRobustSerializer serializer)
diff --git a/Content.Shared/Preferences/PlayerPreferences.cs b/Content.Shared/Preferences/PlayerPreferences.cs
index aee46f488b1..d4f67364c76 100644
--- a/Content.Shared/Preferences/PlayerPreferences.cs
+++ b/Content.Shared/Preferences/PlayerPreferences.cs
@@ -13,11 +13,11 @@ namespace Content.Shared.Preferences
     [NetSerializable]
     public sealed class PlayerPreferences
     {
-        private Dictionary<int, ICharacterProfile> _characters;
+        private Dictionary<int, HumanoidCharacterProfile> _characters;
 
-        public PlayerPreferences(IEnumerable<KeyValuePair<int, ICharacterProfile>> characters, int selectedCharacterIndex, Color adminOOCColor, List<ProtoId<ConstructionPrototype>> constructionFavorites)
+        public PlayerPreferences(IEnumerable<KeyValuePair<int, HumanoidCharacterProfile>> characters, int selectedCharacterIndex, Color adminOOCColor, List<ProtoId<ConstructionPrototype>> constructionFavorites)
         {
-            _characters = new Dictionary<int, ICharacterProfile>(characters);
+            _characters = new Dictionary<int, HumanoidCharacterProfile>(characters);
             SelectedCharacterIndex = selectedCharacterIndex;
             AdminOOCColor = adminOOCColor;
             ConstructionFavorites = constructionFavorites;
@@ -26,9 +26,9 @@ namespace Content.Shared.Preferences
         /// <summary>
         ///     All player characters.
         /// </summary>
-        public IReadOnlyDictionary<int, ICharacterProfile> Characters => _characters;
+        public IReadOnlyDictionary<int, HumanoidCharacterProfile> Characters => _characters;
 
-        public ICharacterProfile GetProfile(int index)
+        public HumanoidCharacterProfile GetProfile(int index)
         {
             return _characters[index];
         }
@@ -41,7 +41,7 @@ namespace Content.Shared.Preferences
         /// <summary>
         ///     The currently selected character.
         /// </summary>
-        public ICharacterProfile SelectedCharacter => Characters[SelectedCharacterIndex];
+        public HumanoidCharacterProfile SelectedCharacter => Characters[SelectedCharacterIndex];
 
         public Color AdminOOCColor { get; set; }
 
@@ -50,12 +50,12 @@ namespace Content.Shared.Preferences
         /// </summary>
         public List<ProtoId<ConstructionPrototype>> ConstructionFavorites { get; set; } = [];
 
-        public int IndexOfCharacter(ICharacterProfile profile)
+        public int IndexOfCharacter(HumanoidCharacterProfile profile)
         {
             return _characters.FirstOrNull(p => p.Value == profile)?.Key ?? -1;
         }
 
-        public bool TryIndexOfCharacter(ICharacterProfile profile, out int index)
+        public bool TryIndexOfCharacter(HumanoidCharacterProfile profile, out int index)
         {
             return (index = IndexOfCharacter(profile)) != -1;
         }