He is best known for his work illustrating the comic book mini-series Bite Club and its sequel Bite Club: Vampire Crime Unit for DC Comics,[1] where he also illustrated stories for Robin, Fables, Batman: The Ultimate Training Guide, and Lucifer.
Hahn later moved his work to Slave Labor Graphics and restarted the series under the name Private Beach, which garnered him an Eisner Award nomination.
He has also written an X-Men story for Ultimate X-Men #11 for Marvel Comics and drawn a story for Michael Chabon's The Escapist #5, written by Howard Chaykin, drawn several issues of Marvel Adventures:The Fantastic Four, as well five issues of Spider-Man Loves Mary Jane.
[2] In 2011, he released his second creator-owned alternative mini-series, a five-issue story called All Nighter, published by Image Comics.
[3] He recently pencilled the artwork for DC Comics' Batman '66 Meets the Man From UNCLE cross-over mini-series as well as wrapping up his creator-owned four-issue post-apocalyptic story, Dayglow, published by Publish Enemies and currently available in digital download format from Comixology.