diff --git a/Assets/Prefabs/Enemy.prefab b/Assets/Prefabs/Enemy.prefab
index 9499df2..9f76819 100644
--- a/Assets/Prefabs/Enemy.prefab
+++ b/Assets/Prefabs/Enemy.prefab
@@ -361,10 +361,29 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: f74e42a58e48af646a73723847df5633, type: 3}
   m_Name: 
   m_EditorClassIdentifier: Assembly-CSharp::Platformer.Mechanics.MonsterRandomizer
-  idleSprites:
+  idleFrames:
   - {fileID: -7548370174848201806, guid: f7b7e5d5d35e8ea4a9574fc970089486, type: 3}
+  - {fileID: 3965259580443734907, guid: eb4754ac8816180459f43ea0d2be515d, type: 3}
+  - {fileID: 3875302334163674375, guid: f8a4b8c30ad9dc0479c2a21f635975c0, type: 3}
+  - {fileID: -5286858119833128327, guid: f8519f10c50debc448559483e0af1b42, type: 3}
   - {fileID: 4852648563935847630, guid: f8f1bd54f70dc914f9ff6999cff72846, type: 3}
+  - {fileID: -2075586642352475843, guid: 9dd5ae40315dfde4aa078c1bac029536, type: 3}
+  - {fileID: -4443778377869457348, guid: 0c9ad66301856634a91cf0e197d82f1f, type: 3}
+  - {fileID: -1033834695554640417, guid: 5ee9ab2bd24109d4998b005dbb896611, type: 3}
   - {fileID: -480068022978346209, guid: 2cd59e341ddcef747b2fdeed0e184687, type: 3}
+  - {fileID: 6320002499032068693, guid: ca8ffcfca8e7451449d5dd9222a808df, type: 3}
+  - {fileID: 5702032684225411157, guid: 22e51794b9b3d194e93aaf103aab3212, type: 3}
+  - {fileID: -6575996007543532477, guid: 0f2b5a062cd5d154d87bd0b576102c53, type: 3}
   - {fileID: 1142325901465378314, guid: 601020362ae2a214298ee67b288426c6, type: 3}
+  - {fileID: -2383216395390897268, guid: f815cc0415b5fe94f951ff5814c7366c, type: 3}
+  - {fileID: 823019882062329887, guid: 39ea050ebee544740bfe48b5bf3ec6fe, type: 3}
+  - {fileID: 3458522810709938060, guid: 20dfa65d954a4434a8cda4938dd43da9, type: 3}
   - {fileID: 3001420397446177360, guid: f2ccd91debeaa624bb282fbaa4d0153b, type: 3}
+  - {fileID: -889286983698815187, guid: 5705c3e56b737094592a94a7727b8f07, type: 3}
+  - {fileID: -1578793236100974128, guid: fff66ff621553424b9943adbc310a2c4, type: 3}
+  - {fileID: 1103436243820016618, guid: 61969d12f2371b041b41c21d437bb4a9, type: 3}
   - {fileID: 5433026174052882790, guid: 115d57f5258ccb74f86354a2cd28045d, type: 3}
+  - {fileID: 8917375057226933945, guid: 5445e614d5225714e9550e08f8bccec1, type: 3}
+  - {fileID: -4095915237629478068, guid: 1f8ec15a958211a478994dd27d1c879b, type: 3}
+  - {fileID: 2697896165774990149, guid: 611097d2df9e43b40bec486f141c7ae9, type: 3}
+  frameInterval: 0.15
diff --git a/Assets/Scripts/Mechanics/MonsterRandomizer.cs b/Assets/Scripts/Mechanics/MonsterRandomizer.cs
index 3a4ebb5..2c5f52f 100644
--- a/Assets/Scripts/Mechanics/MonsterRandomizer.cs
+++ b/Assets/Scripts/Mechanics/MonsterRandomizer.cs
@@ -3,31 +3,55 @@ using UnityEngine;
 namespace Platformer.Mechanics
 {
     /// <summary>
-    /// 몬스터 종류 랜덤 영역. Awake 영역 6 종 (M001~M006) 영역 영역 idle sprite 영역 random 적용.
-    /// PD 지시 (2026-05-10): "몬스터 종류 다양하게 반영".
-    /// Animator 영역 영역 — sprite 자동 영역 영역 영역 영역 — Animator 영역 영역 (death animation 영역 영역 영역 영역 후속 영역).
+    /// 몬스터 종류 랜덤 영역 + 수동 idle animation.
+    /// PD 지시 (2026-05-10): 6 종 (M001~M006) random + animation 영역.
+    /// Animator 영역 영역 (sprite 자동 영역 영역 X) — 4 frame idle loop 수동 영역.
     /// </summary>
     public class MonsterRandomizer : MonoBehaviour
     {
-        [Tooltip("M001~M006 idle sprite 영역 (Inspector 영역 영역 영역 영역·Awake 영역 1 영역 random 영역)")]
-        public Sprite[] idleSprites;
+        [Tooltip("6 종 × 4 frame idle sprite (24 sprite·6 group). Inspector 영역 영역 — 0~3=M001·4~7=M002·...")]
+        public Sprite[] idleFrames;
+
+        [Tooltip("frame 영역 (초). 0.15s = 1 frame")]
+        public float frameInterval = 0.15f;
+
+        const int FramesPerMonster = 4;
+        int _monsterIdx;
+        int _frame;
+        float _elapsed;
+        SpriteRenderer _sr;
 
         void Awake()
         {
-            if (idleSprites == null || idleSprites.Length == 0)
-            {
-                idleSprites = Resources.LoadAll<Sprite>("Monsters");
-                if (idleSprites == null || idleSprites.Length == 0) return;
-            }
-
-            var sr = GetComponent<SpriteRenderer>();
-            if (sr == null) return;
-
+            _sr = GetComponent<SpriteRenderer>();
             var anim = GetComponent<Animator>();
             if (anim != null) anim.enabled = false;  // sprite 자동 영역 영역
 
-            var pick = idleSprites[Random.Range(0, idleSprites.Length)];
-            if (pick != null) sr.sprite = pick;
+            int monsters = (idleFrames != null) ? idleFrames.Length / FramesPerMonster : 0;
+            if (monsters <= 0) return;
+            _monsterIdx = Random.Range(0, monsters);
+            _frame = 0;
+            _elapsed = 0f;
+            ApplyFrame();
+        }
+
+        void Update()
+        {
+            if (_sr == null || idleFrames == null) return;
+            _elapsed += Time.deltaTime;
+            if (_elapsed >= frameInterval)
+            {
+                _elapsed = 0f;
+                _frame = (_frame + 1) % FramesPerMonster;
+                ApplyFrame();
+            }
+        }
+
+        void ApplyFrame()
+        {
+            int idx = _monsterIdx * FramesPerMonster + _frame;
+            if (idx >= 0 && idx < idleFrames.Length && idleFrames[idx] != null)
+                _sr.sprite = idleFrames[idx];
         }
     }
 }
diff --git a/Assets/Scripts/Skills/Effectors/Projectile.cs b/Assets/Scripts/Skills/Effectors/Projectile.cs
index 8df92d8..7d635b4 100644
--- a/Assets/Scripts/Skills/Effectors/Projectile.cs
+++ b/Assets/Scripts/Skills/Effectors/Projectile.cs
@@ -17,8 +17,8 @@ namespace EerieVillage.Skills.Effectors
         protected ActiveSkillRuntime _runtime;
         protected PlayerSkillInventory _inventory;
         protected Vector2 _direction;
-        protected float _speed = 12f;
-        protected float _lifetime = 3f;
+        protected float _speed = 6f;  // BT12-Dev 2026-05-10 PD — 거리 차이 체감 영역 영역 (12 → 6)
+        protected float _lifetime = 5f;  // 영역 영역 영역 (Long 18.67 / 6 = 3.11s 영역 영역)
 
         // BT12-Dev 2026-05-10 (PD #1·#2) — 거리 제한·벽 충돌 영역
         protected Vector2 _spawnPosition;