Goomba with his friends during his birthday party.
Goomba is a character that appears in A Koopa's Revenge. He was depicted as the damsel-in-distress in the first game since him and the other Goomba friends needed to be rescued. He was a non-playable character in A Koopa's Revenge but is said to be playable in the sequel since he is an ally with Koopa and Shy-Guy.
In A Koopa's Revenge
Background
Goomba had a birthday party that was crashed by Mario and his gang in the game. With that being done, Koopa went on and took revenge on Mario to defend the Goomba. In the end, Goomba and the rest of his friends were successfully rescued by Koopa.
Appearance
Goomba has a body style that takes the shape of a mushroom. He is color brown and wears green shoes. He was seen wearing a party hat along with the other goombas during his birthday party.
In A Koopa's Revenge 2
Goomba joins Shy-Guy and Koopa to save Bowser, becoming playable. https://www.youtube.com/watch?v=kTt8CVyJg58 Go to this link to see Goomba's powerups. (SPOILERS)