Biff Atlas is a character in the Super Mario series. He first appeared in Luigi's Mansion. He is also called Biff Atlas, The Body Builder. His name is a pun on the word 'biff' which means 'to hit', and a titan from Greek Mytgology who had to hold up the sky named Atlas. He is an optional boss. To kill him, Luigi has to hit him with punching bags three times, and then suck him up in his vacuum cleaner.