Cheung worked on several Marvel series during the mid- to late 1990s. He also worked on Scion for Crossgen Comics in the early 2000s. He later returned to Marvel, where he illustrated the five-issue New Avengers: Illuminati mini-series for Marvel Comics, and then pencilled two more issues of New Avengers.
He was named in August 2005 as one of Marvel's "Young Guns", a group of artists that, according to Marvel Editor-in-Chief Joe Quesada, have the qualities that make "a future superstar penciller". Other "Young Guns" include Olivier Coipel, David Finch, Trevor Hairsine, Adi Granov and Steve McNiven.[2]
Cheung illustrated the 2010-2012 miniseries Avengers: The Children's Crusade.[3]
In 2015, Marvel enlisted Cheung to create an Agents of S.H.I.E.L.D. poster for a panel devoted to that TV series at that year's San Diego Comic-Con
