He is mostly known for his work throughout the 1990s on Marvel's X-Men related titles, specifically Uncanny X-Men, the main title itself, and the spin-off series that he conceived with artist Chris Bachalo, Generation X. Generation X focused on a number of young mutant students who attempted to become super-heroes in their own right at a separate school, with the guidance of veteran X-related characters Banshee and Emma Frost. He also had writing stints on Marvel's Fantastic Four, Alpha Flight, and The Adventures of Cyclops and Phoenix miniseries with artist Gene Ha. Show less «