Harry Delgado (sometimes referred to as "Marco" in annotated materials- it is made unclear in the X-Men series whether he is in fact the same S.H.I.E.L.D. Agent who was hunting the Acolytes, or an individual with a different name) is a fictional mutant supervillain in the Marvel Comics Universe. He was created by Chris Claremont and debuted in X-Men vol. 2 #1