He is a prominent contributor to the Invincible universe, having created variant covers for Invincible Universe: Battle Beast and produced viral video content for Amazon Prime’s official Prime Video and Invincible YouTube channels. His extensive cover gallery features iconic franchises and characters such as Harley Quinn, Transformers, G.I. Joe, and Teenage Mutant Ninja Turtles/The Last Ronin II, alongside modern hits like Something is Killing the Children, The Darkness, Witchblade, and Radiant Pink. From Mark Millar’s Night Club to James Tynion IV’s The Closet to Creepshow, Deegan’s work continues to define the visual landscape of modern comic book covers.