Both Kubert and his brother Andy signed exclusive contracts with DC Comics in June 2005.

[20] Following his work on Superman he penciled the "Final Crisis" tie-in, DC Universe: Last Will and Testament, written by Brad Meltzer.

This issue, written by Peter Tomasi, highlighted Alfred Pennyworth's efforts to recruit a new team of Outsiders in the wake of Batman's apparent death.

[23] After the release of the comic book, Kubert said he was pleased with his work at DC and had done, "what [he] set out to do," which was to draw Superman.

[24] May 2009 marked Adam Kubert's return to Marvel, his first interior work being published as one of two stories in Wolverine #73 and 74.

[25] Following this he contributed several covers to New Mutants and Wolverine: Weapon X, and penciled the "Dark Reign" tie in, The List: Amazing Spider-Man.

[26] When he returned to penciling for Marvel, he continued to do some work for DC, contributing the stories for the Wednesday Comics "Sgt.

In June 2017, Kubert began penciling Peter Parker: The Spectacular Spider-Man written by Chip Zdarsky.

[30][31] In February 2020, Kubert and writer Benjamin Percy were the creative team on a new Wolverine series that debuted as part of the Marvel's Dawn of X relaunch the X-Men line of comics.

[7] Kubert donated an archive of his and his father's work to the Cary Graphic Arts Collection, a rare book library at his alma mater in Rochester, NY.

The archive includes process work and finished art, as well as his father's drafting table, which is on permanent exhibit.