Colosseum: Custom Mobs & Arena Battles

By
GrieverAndLoke

14 custom fighters with unique combat styles, Emperor Challenges and evolving weapons. Summon a real Roman arena and watch the fighters turn on anyone.

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Lion.png

Valkyrie.png

Alpha Hoglin.png

Soul Witch.jpg

Ender Assassin.png

Colosseum.png

Thermae

Horreum

Description

🏛️ Colosseum

We got tired of mob addons that give you many mobs OR good mobs, never both.

So we built a Colosseum. Then two more.

Each one has an Emperor. He wants a show. Win his challenge, and he opens the dungeon under the arena. At the bottom waits a boss, and its drop leads you to the next colosseum.

🗺️ The Path

Vespasianus — LUDUS. Survive the waves.
Below: Medusa.

Titus — NAUMACHIA. The arena floods, the Tritons rise.
Below: the Hydra. (New!)

Domitianus — APOTHEOSIS. Reach the sky, against the clock. (New!)
Below: the Chimera. Coming soon...

??? — Needs all three. We won't say more.

👑 The Dungeon Bosses

Medusa
Hold her gaze too long and you turn to stone. When she becomes untouchable, there is only one way to defeat her!
Offer the Medusa Gem to Vespasianus.

HP: 350

Damage per hit: 8 (causes Poison)

Ability: Petrifying Gaze (Blindness + Slowness), Acid Bomb (poison cloud), Invincible phase with a continuous beam — reflect it with the Mirrors.

Drops: Medusa's Staff, Colosseum Smithing Template, Colosseum Block, rare minerals.

Hydra (New!)
She waits in the Colosseum Prison, half under water. She starts with one head. Hitting her harder is not the answer.
Offer the Hydra Gem to Titus.

HP: 350

Damage per hit: 8

Ability: Venom Spit, Earthquake, grows a new head as she gets hurt. The legends say how she was beaten.

Drops: Hydra's Staff, End Key, Colosseum Smithing Template, Colosseum Block, rare minerals.

Chimera — Coming soon...
A lion in front, a goat in the middle, a snake behind. Domitianus keeps her for the worthy.

🦁 The Fighters

Along your journey, you will face unique fighters, each with its own combat style. Defeat them and collect Spawners and Colosseum Shards

⚠️ Warning, Colosseum mobs are highly aggressive! They don't only fight you: they turn on anyone.

🪢 = Tameable

🪢 Gladiator — Plains & Forests
A veteran who hunts worthy opponents. The closer he gets to defeat, the more dangerous he becomes.

HP: 60

Damage per hit: 6-7 / 8-10

Ability: Berserk - Increased knockback resistance, Increased damage, Increased speed.

🪢 Lion — Savannas & Jungles
Attack one Lion and the entire pack comes for you.

HP: 30

Damage per hit: 5

Ability: Leap to target. Can be leashed.

🪢 Valkyrie — Mountains & Cold Biomes
She crashes into battle with sweeping attacks that leave her enemies weakened.

HP: 80

Damage per hit: 7-8

Ability: Whirlwind (causes Weakness).

🪢 Triton — Oceans
He strikes from afar, retreats when threatened, and turns battles into chaos.

HP: 30

Damage per hit: 3-4 (causes Poison)

Ability: Ranged, Escape.

Mushroom Minotaur — Mushroom Islands (Rare)
He never fights alone, and anyone who threatens his herd learns why.

HP: 120

Damage per hit: 11-14

Ability: Summons Mooshroom (aggressive).

Alpha Hoglin — Crimson & Warped Forest
When two Alpha Hoglins meet, they fight for dominance before anything else.

HP: 150

Damage per hit: 14-16

Ability: Duel: if dueling a similar, causes explosions nearby.

🪢 Ender Assassin — The End
Silent. Patient. Completely passive... until you strike first.

HP: 100

Damage per hit: 10-12

Ability: Ranged (causes Slowness), Smart Teleport.

Soul Witch — Soul Sand Valley
She hurls potions, drinks them to survive, and lets her Soul Bombs do the dirty work.

HP: 80

Damage per hit: 5 (causes Weakness)

Ability: Ranged (splash potion), Drinks potions, Summons Soul Bomb (explodes at contact).

Swamp Witch — Swamp & Mangrove Swamp

HP: 80

Damage per hit: 5 (causes Wither)

Ability: Ranged (splash potion), Drinks potions, Summons Giant Parasites (poison attack).

Arena bosses — summon them with their spawners:

Warden Knight — a living fortress of Sculk. When victory seems close, the real battle begins.

HP: 250 · Damage: 18-22 · Ability: Sonic boom, Weakness Aura, Transform (50% HP), Random Area Attack.

Blaze Queen — she rains fire and punishes anyone who comes close.

HP: 150 · Damage: 9-17 · Ability: Ranged, Blindness Aura, Summons Blaze.

Shulker Golem — when he enters the arena, nobody keeps their feet on the ground for long.

HP: 300 · Damage: 18-20 · Ability: Ranged, Area damage (causes Levitation), Summons Shulker.

Doc & Frank — it's alive ⚡. And it has a doctor.

HP: 40 / 200 · Damage: - / 10 · Ability: [Doc] splash potions, drinks potions / [Frank] Summons Lightning (+ Absorption), Explodes at low HP.

Scar (Cross-Addon 🔗) — the apex predator, leader of the pride. Only with Colosseum Legacy.

HP: 250 · Damage: 15 / 17-20 · Ability: Leap to target, Summons Lion, Berserk, Stealth + Regenerate HP.

🏇 Mounts & Heroes

Rhino — Plains (Rare) & Savannas (Common)
Peaceful, unless disturbed. Feed it a Hay Block to tame it, saddle it to ride.

HP: 80 · Damage: 10 · Ability: Regeneration, Jump to Dash and hurl your enemies.

Phoenix (New!) — The Nether
Tame it with a Lava Cookie and fly. If it falls, it comes back.

HP: 40 · Damage: 6 · Ability: Flight, Rebirth.

Heroes — some mobs evolve into legends. All you need is a Name Tag and the right name.

Gladiator -> Musashi

🏛️ The Colosseums

Every fighter can drop its spawner and a Colosseum Shard. Collect the fragments, forge them into a Colosseum, place it, fill it with the fighters you caught. Then watch.

🌊 Prismarine Colosseum — trade with Santocchini, the Colosseum prisoner. Inside waits Ciocca, who trades what you need to tame Valkyries and Ender Assassins.

🌌 End Colosseum (New!) — bring a Colosseum and the End Key to Ciocca. Domitianus is waiting inside.

Circulators wander the Overworld and trade Roman Structures: Puteus, Turris, Templum, Domus, Horreum, Thermae. Build your own Empire.

⚔️ Weapons & Essences

Defeat Musashi and claim his Katana. Craft an Essence, bring it to a Smithing Table with the Colosseum Smithing Template, and your Katana or Battleaxe evolves. Every essence awakens a different power.

Diamond · Netherite · Emerald · Redstone · Copper · Musical · Slime · Crying Obsidian · Prismarine · Sculk · Glowstone · Amethyst · Honey · Cactus · Poisonous Potato · Turtle (NAUMACHIA reward only)

(New!) 5 new Battleaxes: Glowstone · Poisonous Potato · Honey · Cactus · Turtle

Boss weapons: Medusa's Staff (slowing beam, Acid Bomb) and Hydra's Staff (New!) (venom spit, and something heavier while sneaking).

Every power is explained in the new Colosseum Guidebook: 16 pages, given to every player on joining.

...and the Shards will answer to more materials than these. 👀

🔗 Linked Addons

Pantheon — a questline adventure in the same universe: 11 Roman Gods, ancient temples, and a faun with a dark secret.
Colosseum Legacy — a companion add-on with exclusive content.

🔧 Details & Compatibility

Minecraft Bedrock Edition 1.21+ · Behavior Pack + Resource Pack · Works in multiplayer and on servers.
Every mob behavior is pure vanilla entity logic. The Script API powers structures, spawners, weapon abilities and the Guidebook.

💬 About us

We're Griever & Loke, two people. Colosseum is our main project and we update it often. Our goal is the Minecraft Marketplace, and we'll tell you how it goes.

Follow the project to know when the next colosseum opens. Previews and a say in what we build next: join our Discord.

Featuring Colosseum in a video? Credit us and link this page. Please don't repackage it or post your own download links.

Created by Griever & Loke · Built with LokeBlock.

Cover and promotional art are AI-assisted. All in-game visuals are shown in the gallery screenshots.