Several Mario games have introduced variations of Goombas like Bone Goombas and Gold Goombas. The Goombas can be in a variety of costumes For example, Jack O' Goomba from Super Mario Galaxy.
Blue Goomba
Bone Goomba
Gold Goomba
Goombeetle
Jack O' Goomba
Prickly Goomba
Raccoon Tail Goomba
Red Goomba