Goombella is the first partner in Paper Mario: The Thousand Year Door. She is the smarty one and Tattles on enemies to see there defense secret abilites attacks and HP. She seems to replace Goombario in the last game. She is a Goomba. She does not appear in Paper Mario: Sticker Star but she is mentioned.
She seems to be a jerk sometimes, like any tattling partner, but and can be useful other times. Nothing is known if she has a lovelife but she kissed Mario In the beginning of the game.