The Gloomba is a variant of the Goomba from the Super Mario Bros. video game series. They are Goombas with a bluish hue to their bodies which is attributed to their living underground without sunlight. They first appear in Super Mario Bros. but are first identified with the Gloomba name in Paper Mario. In the Paper Mario series, they are considerably tougher than standard Goombas. Beyond that, there isn't really anything else to set them apart from normal Goombas.