The Raxacoricofallapatorian are a fictional alien race from Doctor Who. They are also called Slitheens. They have the technology to compress themselves into fat, human bodies but it causes them to have gas. The Slitheen family visited earth in an attempt to destroy the earth and sell it as fuel for space ships. They failed and were killed by a missile. They are very strong, have a incredible sense of smell and can run surprisingly fast.