Sam Liu is a director and a storyboard illustrator. He is well known for directing direct-to-DVD comic book movies like Thor: Tales of Asgard, All-Star Superman and Planet Hulk. He is one of the directors for Young Justice. Credits Season 1 02. "Fireworks" External links Official blog Sam Liu at Wikipedia Sam Liu at IMDb. Retrieved from "https://youngjustice.fandom.com/wiki/Sam_Liu?oldid=219758" Categories: A to Z Directors Real world Community content is available under CC-BY-SA unless otherwise noted.