James Arthur "Jamie" Madrox, also called the Multiple Man, is a fictional character appearing in American comic books published by Marvel Comics. Created by writer/editor Len Wein, he first appeared in Giant-Size Fantastic Four #4 (February 1975).
A mutant with the ability to create instant duplicates of himself, Madrox was mainly a minor or supporting character until his appearance in the 1987 miniseries Fallen Angels.