diff --git a/java/noppes/npcs/api/ability/data/IEnergyDisplayData.java b/java/noppes/npcs/api/ability/data/IEnergyDisplayData.java
index 269f094..e1b9097 100644
--- a/java/noppes/npcs/api/ability/data/IEnergyDisplayData.java
+++ b/java/noppes/npcs/api/ability/data/IEnergyDisplayData.java
@@ -21,6 +21,10 @@ public interface IEnergyDisplayData {
 
     void setOuterColorAlpha(float outerColorAlpha);
 
+    float getInnerAlpha();
+
+    void setInnerAlpha(float innerAlpha);
+
     float getRotationSpeed();
 
     void setRotationSpeed(float rotationSpeed);
diff --git a/java/noppes/npcs/api/entity/IEnergyAbility.java b/java/noppes/npcs/api/entity/IEnergyAbility.java
new file mode 100644
index 0000000..b4b18b9
--- /dev/null
+++ b/java/noppes/npcs/api/entity/IEnergyAbility.java
@@ -0,0 +1,66 @@
+package noppes.npcs.api.entity;
+
+import net.minecraft.entity.Entity;
+
+/**
+ * Base interface for all energy ability entities (Projectiles, Barriers).
+ * Contains shared display, lightning, owner, and charging properties.
+ */
+public interface IEnergyAbility<T extends Entity> extends IEntity<T> {
+
+    // ==================== OWNER ====================
+
+    int getOwnerEntityId();
+
+    IEntity getOwner();
+
+    // ==================== DISPLAY ====================
+
+    int getInnerColor();
+
+    void setInnerColor(int color);
+
+    float getInnerAlpha();
+
+    void setInnerAlpha(float alpha);
+
+    int getOuterColor();
+
+    void setOuterColor(int color);
+
+    boolean isOuterColorEnabled();
+
+    void setOuterColorEnabled(boolean enabled);
+
+    float getOuterColorWidth();
+
+    void setOuterColorWidth(float width);
+
+    float getOuterColorAlpha();
+
+    void setOuterColorAlpha(float alpha);
+
+    // ==================== LIGHTNING ====================
+
+    boolean hasLightningEffect();
+
+    void setLightningEffect(boolean enabled);
+
+    float getLightningDensity();
+
+    void setLightningDensity(float density);
+
+    float getLightningRadius();
+
+    void setLightningRadius(float radius);
+
+    int getLightningFadeTime();
+
+    void setLightningFadeTime(int ticks);
+
+    // ==================== STATE ====================
+
+    boolean isCharging();
+
+    float getChargeProgress();
+}
diff --git a/java/noppes/npcs/api/entity/IEnergyBarrier.java b/java/noppes/npcs/api/entity/IEnergyBarrier.java
new file mode 100644
index 0000000..ddce946
--- /dev/null
+++ b/java/noppes/npcs/api/entity/IEnergyBarrier.java
@@ -0,0 +1,64 @@
+package noppes.npcs.api.entity;
+
+import net.minecraft.entity.Entity;
+
+/**
+ * Base interface for energy barrier entities (Dome, Panel).
+ * Barriers are defensive structures that block incoming energy projectiles.
+ * Extends IEnergyAbility for shared display/lightning/owner/charging methods.
+ */
+public interface IEnergyBarrier<T extends Entity> extends IEnergyAbility<T> {
+
+    // ==================== HEALTH ====================
+
+    float getCurrentHealth();
+
+    void setCurrentHealth(float health);
+
+    float getHealthPercent();
+
+    float getMaxHealth();
+
+    void setMaxHealth(float maxHealth);
+
+    boolean isUseHealth();
+
+    void setUseHealth(boolean useHealth);
+
+    // ==================== DURATION ====================
+
+    int getDuration();
+
+    void setDuration(int ticks);
+
+    boolean isUseDuration();
+
+    void setUseDuration(boolean useDuration);
+
+    // ==================== STATE (BARRIER-SPECIFIC) ====================
+
+    int getTicksAlive();
+
+    // ==================== BARRIER ====================
+
+    float getDefaultMultiplier();
+
+    void setDefaultMultiplier(float multiplier);
+
+    boolean isKnockbackEnabled();
+
+    void setKnockbackEnabled(boolean enabled);
+
+    float getKnockbackStrength();
+
+    void setKnockbackStrength(float strength);
+
+    int getKnockbackTarget();
+
+    void setKnockbackTarget(int target);
+
+    /**
+     * Returns the barrier type: 0=Dome, 1=Panel
+     */
+    int getBarrierType();
+}
diff --git a/java/noppes/npcs/api/entity/IEnergyDome.java b/java/noppes/npcs/api/entity/IEnergyDome.java
new file mode 100644
index 0000000..0a6fcbf
--- /dev/null
+++ b/java/noppes/npcs/api/entity/IEnergyDome.java
@@ -0,0 +1,13 @@
+package noppes.npcs.api.entity;
+
+import net.minecraft.entity.Entity;
+
+/**
+ * Represents an energy dome barrier - a spherical shield centered on the caster.
+ */
+public interface IEnergyDome<T extends Entity> extends IEnergyBarrier<T> {
+
+    float getDomeRadius();
+
+    void setDomeRadius(float radius);
+}
diff --git a/java/noppes/npcs/api/entity/IEnergyPanel.java b/java/noppes/npcs/api/entity/IEnergyPanel.java
new file mode 100644
index 0000000..122dab3
--- /dev/null
+++ b/java/noppes/npcs/api/entity/IEnergyPanel.java
@@ -0,0 +1,26 @@
+package noppes.npcs.api.entity;
+
+import net.minecraft.entity.Entity;
+
+/**
+ * Represents an energy panel barrier - a flat rectangular shield (Wall or Shield mode).
+ */
+public interface IEnergyPanel<T extends Entity> extends IEnergyBarrier<T> {
+
+    float getPanelWidth();
+
+    void setPanelWidth(float width);
+
+    float getPanelHeight();
+
+    void setPanelHeight(float height);
+
+    float getPanelYaw();
+
+    /**
+     * Panel mode: 0=PLACED, 1=HELD, 2=LAUNCHED
+     */
+    int getPanelMode();
+
+    boolean isLaunched();
+}
diff --git a/java/noppes/npcs/api/entity/IEnergyProjectile.java b/java/noppes/npcs/api/entity/IEnergyProjectile.java
index b55ca94..36e6575 100644
--- a/java/noppes/npcs/api/entity/IEnergyProjectile.java
+++ b/java/noppes/npcs/api/entity/IEnergyProjectile.java
@@ -4,16 +4,12 @@ import net.minecraft.entity.Entity;
 
 /**
  * Represents an energy projectile entity (Orb, Beam, Disc, Laser).
- * Extends IEntity so scripts have full access to both entity and energy-specific methods.
+ * Extends IEnergyAbility for shared display/lightning/owner/charging methods.
  */
-public interface IEnergyProjectile<T extends Entity> extends IEntity<T> {
+public interface IEnergyProjectile<T extends Entity> extends IEnergyAbility<T> {
 
     // ==================== OWNER & TARGET ====================
 
-    int getOwnerEntityId();
-
-    IEntity getOwner();
-
     void setOwner(IEntity owner);
 
     int getTargetEntityId();
@@ -28,27 +24,7 @@ public interface IEnergyProjectile<T extends Entity> extends IEntity<T> {
 
     void setSize(float size);
 
-    // ==================== DISPLAY ====================
-
-    int getInnerColor();
-
-    void setInnerColor(int color);
-
-    int getOuterColor();
-
-    void setOuterColor(int color);
-
-    boolean isOuterColorEnabled();
-
-    void setOuterColorEnabled(boolean enabled);
-
-    float getOuterColorWidth();
-
-    void setOuterColorWidth(float width);
-
-    float getOuterColorAlpha();
-
-    void setOuterColorAlpha(float alpha);
+    // ==================== DISPLAY (PROJECTILE-SPECIFIC) ====================
 
     float getRotationSpeed();
 
@@ -64,24 +40,6 @@ public interface IEnergyProjectile<T extends Entity> extends IEntity<T> {
 
     float getInterpolatedSize(float partialTicks);
 
-    // ==================== LIGHTNING ====================
-
-    boolean hasLightningEffect();
-
-    void setLightningEffect(boolean enabled);
-
-    float getLightningDensity();
-
-    void setLightningDensity(float density);
-
-    float getLightningRadius();
-
-    void setLightningRadius(float radius);
-
-    int getLightningFadeTime();
-
-    void setLightningFadeTime(int ticks);
-
     // ==================== LIFESPAN ====================
 
     float getMaxDistance();
@@ -158,10 +116,6 @@ public interface IEnergyProjectile<T extends Entity> extends IEntity<T> {
 
     boolean hasHit();
 
-    boolean isCharging();
-
-    float getChargeProgress();
-
     /**
      * Returns the energy projectile sub-type.
      * 0=Orb, 1=Beam, 2=Disc, 3=Laser
diff --git a/java/noppes/npcs/api/entity/IEnergySlicer.java b/java/noppes/npcs/api/entity/IEnergySlicer.java
new file mode 100644
index 0000000..b3fec49
--- /dev/null
+++ b/java/noppes/npcs/api/entity/IEnergySlicer.java
@@ -0,0 +1,18 @@
+package noppes.npcs.api.entity;
+
+import net.minecraft.entity.Entity;
+
+/**
+ * Represents an energy slicer projectile - a thin, wide blade that slices through targets.
+ */
+public interface IEnergySlicer<T extends Entity> extends IEnergyProjectile<T> {
+
+    float getSliceWidth();
+    void setSliceWidth(float width);
+
+    float getSliceThickness();
+    void setSliceThickness(float thickness);
+
+    boolean isPiercing();
+    void setPiercing(boolean piercing);
+}
diff --git a/java/noppes/npcs/api/event/IEnergyBarrierEvent.java b/java/noppes/npcs/api/event/IEnergyBarrierEvent.java
new file mode 100644
index 0000000..3b7f602
--- /dev/null
+++ b/java/noppes/npcs/api/event/IEnergyBarrierEvent.java
@@ -0,0 +1,41 @@
+package noppes.npcs.api.event;
+
+import noppes.npcs.api.entity.IEnergyBarrier;
+import noppes.npcs.api.entity.IEnergyProjectile;
+import noppes.npcs.api.entity.IEntity;
+
+public interface IEnergyBarrierEvent extends ICustomNPCsEvent {
+
+    IEnergyBarrier getBarrier();
+
+    IEntity getOwner();
+
+    /**
+     * @hookName energyBarrierSpawned
+     */
+    interface SpawnedEvent extends IEnergyBarrierEvent {
+    }
+
+    /**
+     * @hookName energyBarrierTick
+     */
+    interface UpdateEvent extends IEnergyBarrierEvent {
+    }
+
+    /**
+     * @hookName energyBarrierHit
+     */
+    interface HitEvent extends IEnergyBarrierEvent {
+        IEnergyProjectile getProjectile();
+
+        float getDamage();
+
+        void setDamage(float damage);
+    }
+
+    /**
+     * @hookName energyBarrierDestroyed
+     */
+    interface DestroyedEvent extends IEnergyBarrierEvent {
+    }
+}