diff --git a/Content.Server/Speech/EntitySystems/BarkAccentSystem.cs b/Content.Server/Speech/EntitySystems/BarkAccentSystem.cs
index 52387cf0ff8..06f4a647f06 100644
--- a/Content.Server/Speech/EntitySystems/BarkAccentSystem.cs
+++ b/Content.Server/Speech/EntitySystems/BarkAccentSystem.cs
@@ -38,10 +38,10 @@ public string Accentuate(string message)
             }
 
             return message.Replace("!", _random.Pick(Barks))
-                .Replace("l", "r").Replace("L", "R")
                 //Corvax-Localization-Start
+                .Replace("l", "r").Replace("L", "R")
                 .Replace("л", "р").Replace("Л", "Р");
-                //Corvax-Localization-End
+            //Corvax-Localization-End
         }
 
         private void OnAccent(EntityUid uid, BarkAccentComponent component, AccentGetEvent args)
diff --git a/Content.Server/Speech/EntitySystems/FrontalLispSystem.cs b/Content.Server/Speech/EntitySystems/FrontalLispSystem.cs
index 1508a8b2d43..b442b6a8eae 100644
--- a/Content.Server/Speech/EntitySystems/FrontalLispSystem.cs
+++ b/Content.Server/Speech/EntitySystems/FrontalLispSystem.cs
@@ -1,5 +1,6 @@
 using System.Text.RegularExpressions;
 using Content.Server.Speech.Components;
+using Robust.Shared.Random; // Corvax-Localization
 
 namespace Content.Server.Speech.EntitySystems;
 
@@ -12,6 +13,8 @@ public sealed class FrontalLispSystem : EntitySystem
     private static readonly Regex RegexLowerEcks = new(@"[e]+[x]+[c]*|[x]+");
     // @formatter:on
 
+    [Dependency] private readonly IRobustRandom _random = default!; // Corvax-Localization
+
     public override void Initialize()
     {
         base.Initialize();
@@ -29,6 +32,15 @@ private void OnAccent(EntityUid uid, FrontalLispComponent component, AccentGetEv
         message = RegexUpperEcks.Replace(message, "EKTH");
         message = RegexLowerEcks.Replace(message, "ekth");
 
+        // Corvax-Localization Start
+        // с, в, ч, т in ф or ш
+        message = Regex.Replace(message, @"\B[СВЧТ]\B", _random.Prob(0.5f) ? "Ф" : "Ш");
+        message = Regex.Replace(message, @"\B[свчт]\B", _random.Prob(0.5f) ? "ф" : "ш");
+        // д in ф
+        message = Regex.Replace(message, @"\b[Д](?![ИЕЁЮЯЬ])\b|\B[Д]\B", "Ф");
+        message = Regex.Replace(message, @"\b[Дд](?![ИиЕеЁёЮюЯяЬь])\b|\B[Дд]\B", "ф");
+        // Corvax-Localization End
+
         args.Message = message;
     }
 }
diff --git a/Content.Server/Speech/EntitySystems/MonkeyAccentSystem.cs b/Content.Server/Speech/EntitySystems/MonkeyAccentSystem.cs
index f2813d8245c..21cf3fe7364 100644
--- a/Content.Server/Speech/EntitySystems/MonkeyAccentSystem.cs
+++ b/Content.Server/Speech/EntitySystems/MonkeyAccentSystem.cs
@@ -28,23 +28,23 @@ public string Accentuate(string message)
                 {
                     foreach (var _ in word)
                     {
-                        accentedMessage.Append('O');
+                        accentedMessage.Append('У');  // Corvax-Localization
                     }
 
                     if (_random.NextDouble() >= 0.3)
-                        accentedMessage.Append('K');
+                        accentedMessage.Append('К');  // Corvax-Localization
                 }
                 else
-                    accentedMessage.Append('O');
+                    accentedMessage.Append('У');  // Corvax-Localization
             }
             else
             {
                 foreach (var _ in word)
                 {
                     if (_random.NextDouble() >= 0.8)
-                        accentedMessage.Append('H');
+                        accentedMessage.Append('Г');  // Corvax-Localization
                     else
-                        accentedMessage.Append('A');
+                        accentedMessage.Append('А');  // Corvax-Localization
                 }
 
             }
diff --git a/Content.Server/Speech/EntitySystems/OwOAccentSystem.cs b/Content.Server/Speech/EntitySystems/OwOAccentSystem.cs
index 906da0713e5..619e1eacbc5 100644
--- a/Content.Server/Speech/EntitySystems/OwOAccentSystem.cs
+++ b/Content.Server/Speech/EntitySystems/OwOAccentSystem.cs
@@ -14,6 +14,7 @@ public sealed class OwOAccentSystem : EntitySystem
         private static readonly IReadOnlyDictionary<string, string> SpecialWords = new Dictionary<string, string>()
         {
             { "you", "wu" },
+            { "ты", "ти" }, // Corvax-Localization
         };
 
         public override void Initialize()
diff --git a/Content.Server/Speech/EntitySystems/SlurredSystem.cs b/Content.Server/Speech/EntitySystems/SlurredSystem.cs
index e396cd0b186..4a4a3af64ae 100644
--- a/Content.Server/Speech/EntitySystems/SlurredSystem.cs
+++ b/Content.Server/Speech/EntitySystems/SlurredSystem.cs
@@ -71,6 +71,12 @@ private string Accentuate(string message, float scale)
                     'a' => "ah",
                     'u' => "oo",
                     'c' => "k",
+                    // Corvax-Localization Start
+                    'о' => "а",
+                    'к' => "кх",
+                    'щ' => "шч",
+                    'ц' => "тс",
+                    // Corvax-Localization End
                     _ => $"{character}",
                 };
 
@@ -90,7 +96,7 @@ private string Accentuate(string message, float scale)
                 }
             }
 
-            if (!_random.Prob(scale * 3/20))
+            if (!_random.Prob(scale * 3 / 20))
             {
                 sb.Append(character);
                 continue;
diff --git a/Content.Server/Speech/EntitySystems/StutteringSystem.cs b/Content.Server/Speech/EntitySystems/StutteringSystem.cs
index d6e3c0b749a..ef7ae505bf4 100644
--- a/Content.Server/Speech/EntitySystems/StutteringSystem.cs
+++ b/Content.Server/Speech/EntitySystems/StutteringSystem.cs
@@ -13,7 +13,7 @@ public sealed class StutteringSystem : SharedStutteringSystem
         [Dependency] private readonly IRobustRandom _random = default!;
 
         // Regex of characters to stutter.
-        private static readonly Regex Stutter = new(@"[b-df-hj-np-tv-wxyz]",
+        private static readonly Regex Stutter = new(@"[b-df-hj-np-tv-wxyz-б-вд-к-лмн-прст]", // Corvax-Localization
             RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
         public override void Initialize()