Kirby: Planet Robobot screenshot
Miasmoros is a mid-boss appearing only in Kirby: Planet Robobot. It is a member of the Galboros family and a somewhat toxic relative of the enemy Galbo. When defeated, it can be inhaled to get the Poison ability.
Miasmoros is a slug-like Galboros whose body appears to be made entirely of green slime. Brown sludge covers the top of its head and runs down its back, and it also seems to have bits of metal protruding like spines. It has large yellow eyes with a red tint around the outer edge and its slightly-slitted pupils.
Its upgraded form, Miasmoros 2.0, has purple slime instead of green, making it resemble Poison Kirby to some extent.