Mark Millar is a comic book writer, best known for his work at Marvel Comics and DC Comics throughout the 21st century. After proving himself in the '90s as a talent to watch while writing for DC Comics (on THE AUTHORITY and THE FLASH) and the UK comic 2000 AD, he made his first major contribution to Marvel with Ultimate X-Men, then moved on to The Ultimates, Marvel Knights Spider-Man, Wolverine, Civil War and the creator-owned series Kick-Ass.