Metal Goomba is a goomba that is metal. He has been on Board 8 since the Best Game Ever Contest in 2004. He has since joining the Guru Contest every year (using his alt, rhyhorn), but only starting to participate in the Oracle Challenge from Summer 2008 Contest.
His proudest accomplishment is: finishing 38th place in the Summer 2005 Contest (listed as pikachus, his alt, on the leaderboard).
Nothing else is known about this particular Goomba as he is mostly lurking around the board, waiting for some plumber to jump on his head.