In the Marvel Comics universe, Cerebro (Spanish an Portuguese for "brain") is a device that the X-Men (in particular, their leader, Professor Charles Xavier) use to detect mutants. It was created by Xavier, and was later enhanced by Dr. Henry McCoy. The current version of Cerebro is called Cerebra, to be distinguished from the character of the same name. Cerebro first appeared in X-Men Volume 1 #7 (1964).