diff --git a/Assets/Scripts/Enemy.meta b/Assets/Scripts/Enemy.meta
new file mode 100644
index 00000000..e73fdeed
--- /dev/null
+++ b/Assets/Scripts/Enemy.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 8f6dc132c1fce114da1ae74c46fd57dd
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/Enemy/BossPhaseData.cs b/Assets/Scripts/Enemy/BossPhaseData.cs
new file mode 100644
index 00000000..790940d8
--- /dev/null
+++ b/Assets/Scripts/Enemy/BossPhaseData.cs
@@ -0,0 +1,123 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using Unity.Behavior;
+
+namespace Colosseum.Enemy
+{
+    /// <summary>
+    /// 보스 페이즈 전환 조건 타입
+    /// </summary>
+    public enum PhaseTransitionType
+    {
+        HealthPercent,      // 체력 비율 기반
+        TimeElapsed,        // 시간 경과
+        CustomCondition,    // 커스텀 조건 (코드에서 설정)
+        Manual,             // 수동 전환
+    }
+
+    /// <summary>
+    /// 보스 페이즈 데이터. 각 페이즈의 AI, 조건, 보상을 정의합니다.
+    /// </summary>
+    [CreateAssetMenu(fileName = "NewBossPhase", menuName = "Colosseum/Boss Phase")]
+    public class BossPhaseData : ScriptableObject
+    {
+        [Header("페이즈 정보")]
+        [SerializeField] private string phaseName = "Phase 1";
+        [TextArea(1, 3)]
+        [SerializeField] private string description;
+
+        [Header("전환 조건")]
+        [SerializeField] private PhaseTransitionType transitionType = PhaseTransitionType.HealthPercent;
+        
+        [Tooltip("체력 비율 기반 전환 시, 이 비율 이하에서 페이즈 전환")]
+        [Range(0f, 1f)] [SerializeField] private float healthPercentThreshold = 0.7f;
+        
+        [Tooltip("시간 기반 전환 시, 경과 시간 (초)")]
+        [Min(0f)] [SerializeField] private float timeThreshold = 60f;
+        
+        [Tooltip("커스텀 조건 ID (코드에서 사용)")]
+        [SerializeField] private string customConditionId;
+
+        [Header("AI 설정")]
+        [Tooltip("이 페이즈에서 사용할 Behavior Graph")]
+        [SerializeField] private BehaviorGraph behaviorGraph;
+        
+        [Tooltip("페이즈 전환 시 Blackboard 변수 오버라이드")]
+        [SerializeField] private List<BlackboardVariableOverride> blackboardOverrides = new();
+
+        [Header("페이즈 효과")]
+        [Tooltip("페이즈 시작 시 재생할 애니메이션")]
+        [SerializeField] private AnimationClip phaseStartAnimation;
+        
+        [Tooltip("페이즈 전환 효과 (이펙트, 사운드 등)")]
+        [SerializeField] private GameObject phaseTransitionEffect;
+
+        // Properties
+        public string PhaseName => phaseName;
+        public string Description => description;
+        public PhaseTransitionType TransitionType => transitionType;
+        public float HealthPercentThreshold => healthPercentThreshold;
+        public float TimeThreshold => timeThreshold;
+        public string CustomConditionId => customConditionId;
+        public BehaviorGraph BehaviorGraph => behaviorGraph;
+        public IReadOnlyList<BlackboardVariableOverride> BlackboardOverrides => blackboardOverrides;
+        public AnimationClip PhaseStartAnimation => phaseStartAnimation;
+        public GameObject PhaseTransitionEffect => phaseTransitionEffect;
+
+        /// <summary>
+        /// 전환 조건 충족 여부 확인
+        /// </summary>
+        public bool CheckTransitionCondition(BossEnemy boss, float elapsedTime)
+        {
+            return transitionType switch
+            {
+                PhaseTransitionType.HealthPercent => boss.CurrentHealth / boss.MaxHealth <= healthPercentThreshold,
+                PhaseTransitionType.TimeElapsed => elapsedTime >= timeThreshold,
+                PhaseTransitionType.CustomCondition => boss.CheckCustomCondition(customConditionId),
+                PhaseTransitionType.Manual => false,
+                _ => false,
+            };
+        }
+    }
+
+    /// <summary>
+    /// Blackboard 변수 오버라이드 정보
+    /// </summary>
+    [Serializable]
+    public class BlackboardVariableOverride
+    {
+        [Tooltip("변수 이름")]
+        [SerializeField] private string variableName;
+        
+        [Tooltip("변수 타입")]
+        [SerializeField] private BlackboardVariableType variableType = BlackboardVariableType.Float;
+        
+        [Tooltip("설정할 값")]
+        [SerializeField] private float floatValue;
+        [SerializeField] private int intValue;
+        [SerializeField] private bool boolValue;
+        [SerializeField] private string stringValue;
+        [SerializeField] private GameObject gameObjectValue;
+
+        public string VariableName => variableName;
+        public BlackboardVariableType VariableType => variableType;
+        public float FloatValue => floatValue;
+        public int IntValue => intValue;
+        public bool BoolValue => boolValue;
+        public string StringValue => stringValue;
+        public GameObject GameObjectValue => gameObjectValue;
+    }
+
+    /// <summary>
+    /// Blackboard 변수 타입
+    /// </summary>
+    public enum BlackboardVariableType
+    {
+        Float,
+        Int,
+        Bool,
+        String,
+        GameObject,
+    }
+}
diff --git a/Assets/Scripts/Enemy/BossPhaseData.cs.meta b/Assets/Scripts/Enemy/BossPhaseData.cs.meta
new file mode 100644
index 00000000..3df701f8
--- /dev/null
+++ b/Assets/Scripts/Enemy/BossPhaseData.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 0e9dd028b74b2124895ac9673115a9b9
\ No newline at end of file
diff --git a/Assets/Scripts/Enemy/EnemyBase.cs b/Assets/Scripts/Enemy/EnemyBase.cs
new file mode 100644
index 00000000..03b504d3
--- /dev/null
+++ b/Assets/Scripts/Enemy/EnemyBase.cs
@@ -0,0 +1,202 @@
+using System;
+using UnityEngine;
+using Unity.Netcode;
+using Colosseum.Stats;
+using Colosseum.Combat;
+
+namespace Colosseum.Enemy
+{
+    /// <summary>
+    /// 적 캐릭터 기본 클래스.
+    /// 네트워크 동기화, 스탯 관리, 대미지 처리를 담당합니다.
+    /// </summary>
+    public class EnemyBase : NetworkBehaviour, IDamageable
+    {
+        [Header("References")]
+        [Tooltip("CharacterStats 컴포넌트 (없으면 자동 검색)")]
+        [SerializeField] protected CharacterStats characterStats;
+        [Tooltip("Animator 컴포넌트")]
+        [SerializeField] protected Animator animator;
+        [Tooltip("NavMeshAgent 또는 이동 컴포넌트")]
+        [SerializeField] protected UnityEngine.AI.NavMeshAgent navMeshAgent;
+
+        [Header("Data")]
+        [SerializeField] protected EnemyData enemyData;
+
+        // 네트워크 동기화 변수
+        protected NetworkVariable<float> currentHealth = new NetworkVariable<float>(100f);
+        protected NetworkVariable<float> currentMana = new NetworkVariable<float>(50f);
+        protected NetworkVariable<bool> isDead = new NetworkVariable<bool>(false);
+
+        // 이벤트
+        public event Action<float, float> OnHealthChanged; // currentHealth, maxHealth
+        public event Action<float> OnDamageTaken; // damage
+        public event Action OnDeath;
+
+        // Properties
+        public float CurrentHealth => currentHealth.Value;
+        public float MaxHealth => characterStats != null ? characterStats.MaxHealth : 100f;
+        public float CurrentMana => currentMana.Value;
+        public float MaxMana => characterStats != null ? characterStats.MaxMana : 50f;
+        public bool IsDead => isDead.Value;
+        public CharacterStats Stats => characterStats;
+        public EnemyData Data => enemyData;
+        public Animator Animator => animator;
+
+        public override void OnNetworkSpawn()
+        {
+            // 컴포넌트 참조 확인
+            if (characterStats == null)
+                characterStats = GetComponent<CharacterStats>();
+            if (animator == null)
+                animator = GetComponentInChildren<Animator>();
+            if (navMeshAgent == null)
+                navMeshAgent = GetComponent<UnityEngine.AI.NavMeshAgent>();
+
+            // 서버에서 초기화
+            if (IsServer)
+            {
+                InitializeStats();
+            }
+
+            // 클라이언트에서 체력 변화 감지
+            currentHealth.OnValueChanged += OnHealthChangedInternal;
+        }
+
+        public override void OnNetworkDespawn()
+        {
+            currentHealth.OnValueChanged -= OnHealthChangedInternal;
+        }
+
+        /// <summary>
+        /// 스탯 초기화 (서버에서만 실행)
+        /// </summary>
+        protected virtual void InitializeStats()
+        {
+            if (enemyData != null && characterStats != null)
+            {
+                enemyData.ApplyBaseStats(characterStats);
+            }
+
+            // NavMeshAgent 속도 설정
+            if (navMeshAgent != null && enemyData != null)
+            {
+                navMeshAgent.speed = enemyData.MoveSpeed;
+                navMeshAgent.angularSpeed = enemyData.RotationSpeed;
+            }
+
+            currentHealth.Value = MaxHealth;
+            currentMana.Value = MaxMana;
+            isDead.Value = false;
+        }
+
+
+
+
+
+
+
+
+
+
+
+        /// <summary>
+        /// 대미지 적용 (서버에서 실행)
+        /// </summary>
+        public virtual float TakeDamage(float damage, object source = null)
+        {
+            if (!IsServer || isDead.Value)
+                return 0f;
+
+            float actualDamage = Mathf.Min(damage, currentHealth.Value);
+            currentHealth.Value = Mathf.Max(0f, currentHealth.Value - actualDamage);
+
+            OnDamageTaken?.Invoke(actualDamage);
+
+            // 대미지 피드백 (애니메이션, 이펙트 등)
+            OnTakeDamageFeedback(actualDamage, source);
+
+            if (currentHealth.Value <= 0f)
+            {
+                HandleDeath();
+            }
+
+            return actualDamage;
+        }
+
+        /// <summary>
+        /// 대미지 피드백 (애니메이션, 이펙트)
+        /// </summary>
+        protected virtual void OnTakeDamageFeedback(float damage, object source)
+        {
+            if (animator != null)
+            {
+                animator.SetTrigger("Hit");
+            }
+        }
+
+        /// <summary>
+        /// 체력 회복 (서버에서 실행)
+        /// </summary>
+        public virtual float Heal(float amount)
+        {
+            if (!IsServer || isDead.Value)
+                return 0f;
+
+            float oldHealth = currentHealth.Value;
+            currentHealth.Value = Mathf.Min(MaxHealth, currentHealth.Value + amount);
+            float actualHeal = currentHealth.Value - oldHealth;
+
+            return actualHeal;
+        }
+
+        /// <summary>
+        /// 사망 처리 (서버에서 실행)
+        /// </summary>
+        protected virtual void HandleDeath()
+        {
+            isDead.Value = true;
+
+            if (animator != null)
+            {
+                animator.SetTrigger("Die");
+            }
+
+            if (navMeshAgent != null)
+            {
+                navMeshAgent.isStopped = true;
+            }
+
+            OnDeath?.Invoke();
+
+            Debug.Log($"[Enemy] {name} died!");
+        }
+
+        /// <summary>
+        /// 리스폰
+        /// </summary>
+        public virtual void Respawn()
+        {
+            if (!IsServer) return;
+
+            isDead.Value = false;
+            InitializeStats();
+
+            if (navMeshAgent != null)
+            {
+                navMeshAgent.isStopped = false;
+            }
+
+            if (animator != null)
+            {
+                animator.Rebind();
+            }
+        }
+
+        // 체력 변화 이벤트 전파
+        private void OnHealthChangedInternal(float oldValue, float newValue)
+        {
+            OnHealthChanged?.Invoke(newValue, MaxHealth);
+        }
+    }
+}
diff --git a/Assets/Scripts/Enemy/EnemyBase.cs.meta b/Assets/Scripts/Enemy/EnemyBase.cs.meta
new file mode 100644
index 00000000..b363635a
--- /dev/null
+++ b/Assets/Scripts/Enemy/EnemyBase.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: d928c3a8adf0b424886395e6864ce010
\ No newline at end of file
diff --git a/Assets/Scripts/Enemy/EnemyData.cs b/Assets/Scripts/Enemy/EnemyData.cs
new file mode 100644
index 00000000..32ebaaa4
--- /dev/null
+++ b/Assets/Scripts/Enemy/EnemyData.cs
@@ -0,0 +1,68 @@
+using UnityEngine;
+using Colosseum.Stats;
+
+namespace Colosseum.Enemy
+{
+    /// <summary>
+    /// 적 캐릭터 데이터. 기본 스탯과 보상을 정의합니다.
+    /// </summary>
+    [CreateAssetMenu(fileName = "NewEnemyData", menuName = "Colosseum/Enemy Data")]
+    public class EnemyData : ScriptableObject
+    {
+        [Header("기본 정보")]
+        [SerializeField] private string enemyName;
+        [TextArea(2, 4)]
+        [SerializeField] private string description;
+        [SerializeField] private Sprite icon;
+
+        [Header("기본 스탯")]
+        [Min(1f)] [SerializeField] private float baseStrength = 10f;
+        [Min(1f)] [SerializeField] private float baseDexterity = 10f;
+        [Min(1f)] [SerializeField] private float baseIntelligence = 10f;
+        [Min(1f)] [SerializeField] private float baseVitality = 10f;
+        [Min(1f)] [SerializeField] private float baseWisdom = 10f;
+        [Min(1f)] [SerializeField] private float baseSpirit = 10f;
+
+        [Header("이동")]
+        [Min(0f)] [SerializeField] private float moveSpeed = 3f;
+        [Min(0f)] [SerializeField] private float rotationSpeed = 10f;
+
+        [Header("전투")]
+        [Min(0f)] [SerializeField] private float aggroRange = 10f;
+        [Min(0f)] [SerializeField] private float attackRange = 2f;
+        [Min(0f)] [SerializeField] private float attackCooldown = 1f;
+
+        // Properties
+        public string EnemyName => enemyName;
+        public string Description => description;
+        public Sprite Icon => icon;
+
+        public float BaseStrength => baseStrength;
+        public float BaseDexterity => baseDexterity;
+        public float BaseIntelligence => baseIntelligence;
+        public float BaseVitality => baseVitality;
+        public float BaseWisdom => baseWisdom;
+        public float BaseSpirit => baseSpirit;
+
+        public float MoveSpeed => moveSpeed;
+        public float RotationSpeed => rotationSpeed;
+        public float AggroRange => aggroRange;
+        public float AttackRange => attackRange;
+        public float AttackCooldown => attackCooldown;
+
+        /// <summary>
+        /// CharacterStats에 기본 스탯 적용
+        /// </summary>
+        public void ApplyBaseStats(CharacterStats stats)
+        {
+            if (stats == null) return;
+
+            stats.Strength.BaseValue = baseStrength;
+            stats.Dexterity.BaseValue = baseDexterity;
+            stats.Intelligence.BaseValue = baseIntelligence;
+            stats.Vitality.BaseValue = baseVitality;
+            stats.Wisdom.BaseValue = baseWisdom;
+            stats.Spirit.BaseValue = baseSpirit;
+        }
+    }
+}
diff --git a/Assets/Scripts/Enemy/EnemyData.cs.meta b/Assets/Scripts/Enemy/EnemyData.cs.meta
new file mode 100644
index 00000000..ee869933
--- /dev/null
+++ b/Assets/Scripts/Enemy/EnemyData.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 1ecdc2379b078b246a0bd5c0fb58e346
\ No newline at end of file
diff --git a/Assets/Scripts/Enemy/IDamageable.cs b/Assets/Scripts/Enemy/IDamageable.cs
new file mode 100644
index 00000000..da575b58
--- /dev/null
+++ b/Assets/Scripts/Enemy/IDamageable.cs
@@ -0,0 +1,39 @@
+namespace Colosseum.Combat
+{
+    /// <summary>
+    /// 대미지를 받을 수 있는 엔티티를 위한 인터페이스.
+    /// 플레이어, 적, 보스 등이 구현합니다.
+    /// </summary>
+    public interface IDamageable
+    {
+        /// <summary>
+        /// 현재 체력
+        /// </summary>
+        float CurrentHealth { get; }
+
+        /// <summary>
+        /// 최대 체력
+        /// </summary>
+        float MaxHealth { get; }
+
+        /// <summary>
+        /// 사망 여부
+        /// </summary>
+        bool IsDead { get; }
+
+        /// <summary>
+        /// 대미지 적용
+        /// </summary>
+        /// <param name="damage">적용할 대미지량</param>
+        /// <param name="source">대미지 출처 (선택)</param>
+        /// <returns>실제로 적용된 대미지량</returns>
+        float TakeDamage(float damage, object source = null);
+
+        /// <summary>
+        /// 체력 회복
+        /// </summary>
+        /// <param name="amount">회복량</param>
+        /// <returns>실제로 회복된 양</returns>
+        float Heal(float amount);
+    }
+}
diff --git a/Assets/Scripts/Enemy/IDamageable.cs.meta b/Assets/Scripts/Enemy/IDamageable.cs.meta
new file mode 100644
index 00000000..a0621fe8
--- /dev/null
+++ b/Assets/Scripts/Enemy/IDamageable.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 33a0f0f245adbf64791b38c182c48062
\ No newline at end of file