Greenfury Custom Bosses Addon for Minecraft Bedrock 1.21.100

Overview

Four command-block bosses with unique mechanics: Knightmare, Obliterator, Summoner, and Witcher — each with custom abilities, AI behaviors, and large health pools for challenging fights.

Bosses

Knightmare

Health: 140 hearts

• Full netherite armor skeleton.
• Can switch between 3 weapons (e.g., bow, axe) and has mechanics to disable your shield.
• Night phase: becomes tankier, faster, and deals more damage.
• Can summon a 5-skeleton army.

Obliterator

Health: 160 hearts

• Uses wind charges to launch into midair and strike with a mace.
• Ultimate Smash: launches himself 30 blocks into the air for a powerful impact.

Summoner

Health: 190 hearts

• Can summon illager mobs and buff them (strength, speed) and enchant their weapons.
• Can teleport all players to the same spot and trigger an explosion.
• Can teleport to confuse players and reposition during combat.

Witcher

Health: 70 hearts — sister of the Summoner

• Can teleport similarly to the Summoner.
• Immune to projectiles.
• Throws potions that summon lightning; lightning regenerates her health and applies regeneration.
• Immune to all debuff effects.
• Summons immortal charged creepers that explode when triggered.
• Can summon Ender Crystals in front of her within a 15-block range.

I made these bosses using command blocks with help from Copilot. I recommend downloading a health bar indicator addon to track their health during fights!

Updated on August 4, 2026

• Fixed Obliterator's Ultimate Smash so it reliably deals damage.
• Added new boss: Sea Overlord
  • Base health: 286 hearts (base form).
  • Abilities: spits 5 pufferfish that apply fatal poison (high potency) for 10 seconds and grant Speed 6, Strength 2, and Fire Resistance to the effect; holds a trident that can summon lightning (base trident lightning is slower and shorter).
  • Thunder (Storm) Phase: during thunderstorms Sea Overlord becomes stronger — health increases to 336 hearts, trident lightning becomes faster and lasts ~6 seconds, and his overall power rises.
  • Minions: holds a nautilus shell offhand to summon minions — 3 Atlantis Guards (Health Boost 50, full diamond, normal trident, Speed 2) and 2 Atlantis Wanderers (Health Boost 25, Speed 2, full diamond, emits a loud damaging sound within 10 blocks).
  • Overlord Core: spawns an Overlord Core (an Elder Guardian-type) with Resistance 2 and immunity to wither, poison and fatal poison; the Core grants Sea Overlord Resistance 4 and heals him while active. When the Overlord Core is killed, Poseidon's shrine spawns with an enchanted trident (Unbreaking 3, Mending, Channeling, and gains Loyalty when picked up), enabling special lightning abilities.
  • Sea Overlord equipment: wears full netherite armor; his trident can gain Loyalty 3 and Channeling and can summon explosive lightning in a ~15-block circular area (similar to an Ender Crystal lightning effect).
  • Can summon additional guardians (including Elder Guardian-like Atlantis Guardians) with high Strength (e.g., Strength 3).
  • Night interaction: thunder phase is disabled at night (no thunderstorms occur during night time for this mechanic).
  • Base scream: in base form he can scream every ~7 seconds dealing ~7 hearts of damage in a 13-block range (this does not apply during thunder phase).
  • Player reward: picking up the special trident while Sea Overlord exists grants the player Strength 3 (and enables the trident's special lightning/beacon interaction).