The Goomba-Gang is a group of good Goombas.
Goombario, Goom Goom, Goombaria, Goombella, Goomez, and Goomfrey are part of the Goomba Gang.
Despite there name, the Goomba-Gang are good guys, and help Mario on his various adventures. They are all on Bowsers "Wanted" List. They first appear in the Fan Fiction story WHEN SHADOWS ATTACK, which is due to arrive a May 3rd.