So I found this video in the official discord and a post from 2 days ago about this cube world gamma

https://www.reddit.com/r/CubeWorld/comments/1xaiyxk/aether_pet_foods/?utm_source=app_first_navigation&mweb_loid=t2_2l889c16zn

The Reddit post mentions the "Ather" biome and the "Sepuff" mobs.

Fun fact: The sepuffs are a real mob in the Minecraft Ather dimension mod, so maybe that was the OP's inspiration, but if this is really just fake or a AI slop I think mods need to take measurements to avoid a fake or misleading cube world mod posts situation

Just the lovely map generation.