
Kolobok: Ultimate Boss
Java mod listed for Minecraft 1.20. File opened and checked on 21 Sep 2026; downloads from the MC Java Mods app on Android.
A brutal four-stage Kolobok boss with transformations, lasers, lightning, meteors, and a devastating final explosion.
⬇ Download on Modrinth




Kolobok: Ultimate Boss
Kolobok is no longer just a fairy-tale character.
This mod adds a brutal four-stage boss inspired by the modern cinematic version of Kolobok. He is hostile to almost every living creature and becomes more dangerous with every phase.
Features
Stage 1 - The Rolling Hunter
- 900 HP total boss health
- Extremely fast movement
- Circles around targets at high speed
- Aggressive collision attacks
- Prioritizes players within 50 blocks
Stage 2 - Bodybuilder Kolobok
- Transforms into a muscular humanoid form
- Powerful melee attacks
- Increased movement speed
- Ground slam every few seconds
- Large area damage and knockback
- Can climb very high obstacles without normal jumping
Stage 3 - Flying Death
- Returns to his round form with large black wings
- Extremely fast flight
- Tracks targets in 3D space
- Fires highly accurate lasers from his eyes
- Lasers can hit targets through blocks
- Designed to fight powerful mobs such as the Warden, Wither and Ender Dragon
Stage 4 - Final Apocalypse
- Rises into the air and enters a final attack phase
- Attacks creatures within a huge radius
- Repeated lightning strikes
- Meteor shower attacks
- Extremely high damage output
- Can damage even Creative players during this phase
Final Death Explosion
When Kolobok is finally defeated, he does not die immediately.
A 10-second countdown begins.
After the countdown, Kolobok creates a massive nuclear-style explosion:
- 150 block destruction radius
- 500 HP damage
- Huge shockwave
- Massive terrain destruction
- Can destroy extremely resistant blocks, including obsidian
- Dangerous even to Creative mode players
Run.
Targeting
Kolobok is hostile to almost every living creature.
Players in Survival or Adventure mode within 50 blocks have the highest priority.
If no player is nearby, Kolobok prefers powerful mobs with high maximum health.
Requirements
- Minecraft Java Edition 1.20.1
- NeoForge
- GeckoLib
Installation
- Install the required NeoForge version.
- Install GeckoLib.
- Place the Kolobok mod
.jarfile into yourmodsfolder. - Launch Minecraft.
Notes
This is an intentionally overpowered boss designed for chaotic battles, challenges and boss-vs-boss fights.
Try fighting him with other powerful mobs and see what survives.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as kolobok_boss-1.4.0.jar — drop this file into the mods folder
- Download size: 414 KB
- Download link checked 6 Oct 2026 — working
These come from our own check of the pack file, not from the source page.