[8] By issue #185, Miller had virtually relinquished his role as Daredevil's artist, and was providing only rough layouts for Janson to pencil, ink, and color.

[11] Janson has frequently pencilled and inked for various Batman titles, including the first Detective Comics Annual with writer Dennis O'Neil,[12] "Gothic" with Grant Morrison,[13] and "Knightfall" with Doug Moench.

[14] In 1994, Janson drew the Batman-Spawn: War Devil intercompany crossover which was written by Moench, Chuck Dixon, and Alan Grant.

[19] Janson's work as an inker and occasional penciler at Marvel Comics includes collaborations with John Romita Jr. on Wolverine, The Amazing Spider-Man and Black Panther.

His other work includes Batman: Death and the Maidens,[20] World War Hulk, Battlestar Galactica, Logan's Run, and Terminator 2: Judgment Day.

[21] Janson was one of the artists on The Dark Knight III: The Master Race which was co-written by Frank Miller and Brian Azzarello.