Chernushka (Чернушка)

A Chernushka is a tameable creature that follows its owner and helps break blocks. A Chernushka Stick assigns specific blocks for each companion to break on its own. A mining help toggle and a speed bonus adjust how the companion works, and mining messages can notify the player when a block is broken. The companion walks the ocean floor instead of swimming and is immune to drowning, fall damage and suffocation. It can become a giant fluffy helper and persists through world reloads. Players can set walk and run speeds, a follow distance and a teleport threshold, so the companion does not wander too far away.

The mod requires Fabric API and Geckolib. Cloth Config API and Mod Menu are optional and add a settings screen. Chernushka runs on client and server, so the server and every player need it. Files are published for Fabric, Forge and NeoForge across the 1.20.1 and 1.21.11 releases, and the code is open source under the MIT License. The latest Fabric file is 1.1 for 1.21.11, and the latest NeoForge file is 1.2 for 1.21.5, both marked alpha on Forge and NeoForge.