Fungaloid/doc
Can infect you with spores, but will not actively try to harm you, even if attacked. If allowed to stay in the player's reality bubble, they will breed and convert the landscape into fungal growths. To a properly protected player, they are completely harmless, but their explosive growth can be highly annoying due to the lag it can cause, once enough fungaloids accumulate.
Can be butchered for fluid sacs, which can be eaten raw (low nutrition, moderate quench) or processed into cooking oil or dehydrated vegetables, and fibrous stalks, which disassemble into a profligate quantity of plant fiber.
The fungal landscape can include marloss berry bushes. Anything that would become a fungal shrub can randomly become a marloss bush instead.
Many types of zombies will attack fungaloids, this makes them vulnerable to becoming fungal zombies, which may work in one's favour: a more powerful type of zombie will attack the fungaloid, and then will become the weaker fungal zombies.