Goolanx

The Goolanx is a species of colossal cell puddle.

=In fanon games=

In Pikmin Galaxy Adventure
The Goolanx is the boss of the Blob Tower in Pikmin Galaxy Adventure. Slime that it shoots at leaders and Pikmin may form into a series of makeshift platforms they can climb to reach the creature's glowing nucleus. Pikmin can be thrown at it to harm and eventually kill the creature.