Sporting the best platform shoes, the Nimon was an alien minotaur that could shoot out energy beams out of their horns. The Nimon have a habit of invading planets and eating the entire population, then going to another planet when they’ve eaten everything. This is a problem for planets.

The Nimon were seen in The Horns of Nimon

The Nimon are not the only minotaur like species to appear in Doctor Who, another kind of minotaur appears in The God Complex.