Superman, who was cloned by Lex Luthor Corporation, got pulled into a black hole while fighting the original Superman and found himself on Howard Stark's private island. As a result, a Superman emerged in the Marvel universe, leading to Tony Stark acquiring an older brother, and the Marvel universe changed from that point forward! The film and television realms do not align with the comics, and the timeline has become fragmented. Please consult this work for accuracy, thank you!