diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecobosses/bosses/EcoBoss.java b/eco-core/core-plugin/src/main/java/com/willfp/ecobosses/bosses/EcoBoss.java
index ddb1b95..81afda2 100644
--- a/eco-core/core-plugin/src/main/java/com/willfp/ecobosses/bosses/EcoBoss.java
+++ b/eco-core/core-plugin/src/main/java/com/willfp/ecobosses/bosses/EcoBoss.java
@@ -169,6 +169,12 @@ public class EcoBoss extends PluginDependent<EcoPlugin> {
     @Getter
     private final List<OptionedSound> summonSounds;
 
+    /**
+     * Despawn sounds.
+     */
+    @Getter
+    private final List<OptionedSound> despawnSounds;
+
     /**
      * Spawn messages.
      */
@@ -181,6 +187,12 @@ public class EcoBoss extends PluginDependent<EcoPlugin> {
     @Getter
     private final List<String> deathMessages;
 
+    /**
+     * Despawn messages.
+     */
+    @Getter
+    private final List<String> despawnMessages;
+
     /**
      * Nearby players radius.
      */
@@ -381,6 +393,16 @@ public class EcoBoss extends PluginDependent<EcoPlugin> {
             ));
         }
 
+        this.despawnSounds = new ArrayList<>();
+        for (String string : this.getConfig().getStrings("sounds.despawn")) {
+            String[] split = string.split(":");
+            this.despawnSounds.add(new OptionedSound(
+                    Sound.valueOf(split[0].toUpperCase()),
+                    Float.parseFloat(split[1]) / 16,
+                    Float.parseFloat(split[2])
+            ));
+        }
+
         // Messages
         this.spawnMessages = new ArrayList<>();
         for (String string : this.getConfig().getStrings("broadcast.spawn")) {
@@ -390,6 +412,10 @@ public class EcoBoss extends PluginDependent<EcoPlugin> {
         for (String string : this.getConfig().getStrings("broadcast.death")) {
             this.deathMessages.add(StringUtils.format(string));
         }
+        this.despawnMessages = new ArrayList<>();
+        for (String string : this.getConfig().getStrings("broadcast.despawn")) {
+            this.despawnMessages.add(StringUtils.format(string));
+        }
 
         // Top Damager Commands
         this.topDamagerCommands = new HashMap<>();
diff --git a/eco-core/core-plugin/src/main/java/com/willfp/ecobosses/bosses/tick/tickers/DeathTimeTicker.java b/eco-core/core-plugin/src/main/java/com/willfp/ecobosses/bosses/tick/tickers/DeathTimeTicker.java
index 9d33479..ccc33a0 100644
--- a/eco-core/core-plugin/src/main/java/com/willfp/ecobosses/bosses/tick/tickers/DeathTimeTicker.java
+++ b/eco-core/core-plugin/src/main/java/com/willfp/ecobosses/bosses/tick/tickers/DeathTimeTicker.java
@@ -2,6 +2,8 @@ package com.willfp.ecobosses.bosses.tick.tickers;
 
 import com.willfp.ecobosses.bosses.EcoBoss;
 import com.willfp.ecobosses.bosses.tick.BossTicker;
+import com.willfp.ecobosses.bosses.util.obj.OptionedSound;
+import org.bukkit.Bukkit;
 import org.bukkit.entity.LivingEntity;
 import org.jetbrains.annotations.NotNull;
 
@@ -20,6 +22,14 @@ public class DeathTimeTicker implements BossTicker {
         if (timeLeft <= 0) {
             entity.remove();
             boss.removeLivingBoss(entity);
+
+            for (String despawnMessage : boss.getDespawnMessages()) {
+                Bukkit.broadcastMessage(despawnMessage);
+            }
+
+            for (OptionedSound sound : boss.getDespawnSounds()) {
+                entity.getWorld().playSound(entity.getLocation(), sound.sound(), sound.volume(), sound.pitch());
+            }
         }
     }
 }
diff --git a/eco-core/core-plugin/src/main/resources/bosses/alpha_wolf.yml b/eco-core/core-plugin/src/main/resources/bosses/alpha_wolf.yml
index e7f192e..c682b41 100644
--- a/eco-core/core-plugin/src/main/resources/bosses/alpha_wolf.yml
+++ b/eco-core/core-plugin/src/main/resources/bosses/alpha_wolf.yml
@@ -1,6 +1,6 @@
 enabled: true
 
-name: "&fAlpha Wolf &7| &c%health%♥" # Display name
+name: "&fAlpha Wolf &7| &c%health%♥ &7| &e%time%" # Display name
 base-mob: wolf # Any existing mob - custom_illusioner is also accepted (like in the old Illusioner plugin)
 
 bossbar:
@@ -12,6 +12,7 @@ max-health: 600
 attack-damage: 50
 movement-speed: 2
 follow-range: 15
+time-to-live: 120 # Time to live before auto despawn, in seconds. Set to -1 to disable.
 
 auto-spawn-interval: -1 # Time between auto spawns in ticks (20 ticks in a second) - Set to -1 to disable.
 auto-spawn-locations: [ ] # Formatted as world:x:y:z - for example world_nether:100:10:100
@@ -56,6 +57,10 @@ broadcast:
     - "&f - %second%&f (%second_damage% Damage)"
     - "&f - %third%&f (%third_damage% Damage)"
     - ""
+  despawn:
+    - ""
+    - "&fYou ran out of time to kill the &lAlpha Wolf&r&f!"
+    - ""
 
 # Effects can be found on the wiki! https://ecobosses.willfp.com/
 effects:
@@ -104,6 +109,10 @@ sounds:
     - "entity_wolf_death:50:0.7"
     - "entity_wolf_growl:50:0.8"
 
+  despawn:
+    - "entity_ender_dragon_ambient:50:0.5"
+    - "entity_enderman_death:50:0.5"
+
   summon: # On summon enemy
     - "entity_wolf_pant:10:0.8"
 
diff --git a/eco-core/core-plugin/src/main/resources/bosses/illusioner.yml b/eco-core/core-plugin/src/main/resources/bosses/illusioner.yml
index 557c4b5..919a80f 100644
--- a/eco-core/core-plugin/src/main/resources/bosses/illusioner.yml
+++ b/eco-core/core-plugin/src/main/resources/bosses/illusioner.yml
@@ -1,6 +1,6 @@
 enabled: true
 
-name: "&9Illusioner &7| &c%health%♥" # Display name
+name: "&9Illusioner &7| &c%health%♥ &7| &e%time%" # Display name
 base-mob: custom_illusioner # Any existing mob - custom_illusioner is also accepted (like in the old Illusioner plugin)
 
 bossbar:
@@ -57,6 +57,10 @@ broadcast:
     - "&f - &9%second%&f (%second_damage% Damage)"
     - "&f - &9%third%&f (%third_damage% Damage)"
     - ""
+  despawn:
+    - ""
+    - "&fYou ran out of time to kill the &9&lIllusioner&r&f!"
+    - ""
 
 # Effects can be found on the wiki! https://ecobosses.willfp.com/
 effects:
@@ -109,6 +113,10 @@ sounds:
     - "entity_illusioner_prepare_blindness:50:1"
     - "entity_wither_death:50:2"
 
+  despawn:
+    - "entity_ender_dragon_ambient:50:0.5"
+    - "entity_enderman_death:50:0.5"
+
   summon: # On summon enemy
     - "entity_evoker_prepare_attack:10:2"
 
diff --git a/eco-core/core-plugin/src/main/resources/bosses/steel_golem.yml b/eco-core/core-plugin/src/main/resources/bosses/steel_golem.yml
index f2b9c09..90293f5 100644
--- a/eco-core/core-plugin/src/main/resources/bosses/steel_golem.yml
+++ b/eco-core/core-plugin/src/main/resources/bosses/steel_golem.yml
@@ -1,6 +1,6 @@
 enabled: true
 
-name: "&8Steel Golem &7| &c%health%♥" # Display name
+name: "&8Steel Golem &7| &c%health%♥ &7| &e%time%" # Display name
 base-mob: iron_golem # Any existing mob - custom_illusioner is also accepted (like in the old Illusioner plugin)
 
 bossbar:
@@ -12,6 +12,7 @@ max-health: 1200
 attack-damage: 90
 movement-speed: 1.5
 follow-range: 16
+time-to-live: 120 # Time to live before auto despawn, in seconds. Set to -1 to disable.
 
 auto-spawn-interval: -1 # Time between auto spawns in ticks (20 ticks in a second) - Set to -1 to disable.
 auto-spawn-locations: [] # Formatted as world:x:y:z - for example world_nether:100:10:100
@@ -56,6 +57,10 @@ broadcast:
     - "&f - &8%second%&f (%second_damage% Damage)"
     - "&f - &8%third%&f (%third_damage% Damage)"
     - ""
+  despawn:
+    - ""
+    - "&fYou ran out of time to kill the &8&lSteel Golem&r&f!"
+    - ""
 
 # Effects can be found on the wiki! https://ecobosses.willfp.com/
 effects:
@@ -109,6 +114,10 @@ sounds:
     - "entity_ender_dragon_death:50:1.8"
     - "entity_wither_death:50:1.2"
 
+  despawn:
+    - "entity_ender_dragon_ambient:50:0.5"
+    - "entity_enderman_death:50:0.5"
+
   summon: # On summon enemy
     - "entity_iron_golem_step:10:1.2"
 
diff --git a/eco-core/core-plugin/src/main/resources/bosses/tarantula.yml b/eco-core/core-plugin/src/main/resources/bosses/tarantula.yml
index 53b32ab..b016483 100644
--- a/eco-core/core-plugin/src/main/resources/bosses/tarantula.yml
+++ b/eco-core/core-plugin/src/main/resources/bosses/tarantula.yml
@@ -1,6 +1,6 @@
 enabled: true
 
-name: "&4Tarantula &7| &c%health%♥" # Display name
+name: "&4Tarantula &7| &c%health%♥ &7| &e%time%" # Display name
 base-mob: cave_spider # Any existing mob - custom_illusioner is also accepted (like in the old Illusioner plugin)
 
 bossbar:
@@ -12,6 +12,7 @@ max-health: 900
 attack-damage: 70
 movement-speed: 1.3
 follow-range: 15
+time-to-live: 120 # Time to live before auto despawn, in seconds. Set to -1 to disable.
 
 auto-spawn-interval: -1 # Time between auto spawns in ticks (20 ticks in a second) - Set to -1 to disable.
 auto-spawn-locations: [ ] # Formatted as world:x:y:z - for example world_nether:100:10:100
@@ -56,6 +57,10 @@ broadcast:
     - "&f - &4%second%&f (%second_damage% Damage)"
     - "&f - &4%third%&f (%third_damage% Damage)"
     - ""
+  despawn:
+    - ""
+    - "&fYou ran out of time to kill the &4&lTarantula&r&f!"
+    - ""
 
 # Effects can be found on the wiki! https://ecobosses.willfp.com/
 effects:
@@ -108,6 +113,10 @@ sounds:
     - "entity_spider_death:50:0.7"
     - "entity_wither_death:50:0.5"
 
+  despawn:
+    - "entity_ender_dragon_ambient:50:0.5"
+    - "entity_enderman_death:50:0.5"
+
   summon: # On summon enemy
     - "entity_spider_step:10:1.2"