Bulbmin

Olimar's Notes
This loathsome creature is in fact a parasitic form of Pikmin that has infected a bulborb. Unlike Pikmin that nest in onions, this parasitic relative spends its life inside the body of a host, usually a bulborb. Juveniles fall in line and mimic the actions of their parent until maturing to full independence. By burrowing its root-like limbs into the nervous system of the host bulborb and infusing it with natural hormonal excretions, the Bulbmin is able to control virtually all of the host's body functions. However, the host's voracious appetite seems impossible to suppress.

Louie's Notes
Grind the meat and season with allspice, salt, and ground white pepper. Press the seasoned meat into satchels, then pan fry them with onions. Prior to serving, smother the brats in Dijon mustard and sauerkraut. Buns are optional.

In fan-games
This is where users type in the fan version of Bulbmin.

In Pikmin 4
In Pikmin 4, Bulbmin seem to have adapted to living outside of caves. They are first found after defeating the Giga Bulborb on the first day.