James Braddock Jr. is a fictional character appearing in American comic books published by Marvel Comics. The elder brother of the twin superheroes Brian and Betsy Braddock, he is a mutant possessing the ability to manipulate reality in a variety of ways. Though his mutant powers are very powerful, he is limited in that he is also a schizophrenic who believes reality to be his own dream. Originally a supporting character in his brother's solo comic book series, the emergence of his superhuman powers and subsequent mental illness have led him to become a super-villain associated with both Captain Britain and various X-Men comics.