Dolan, Hannah, red. (2010). „1990s”. DC Comics Year By Year A Visual Chronicle., s. 288: „James Robinson left the title in the capable hands of [David] Goyer’s new writing partner, Geoff Johns.”.. W tym samym roku Johns stał się regularnym pisarzem serii The Flash (zaczynając od numeru 164).
W 2000 roku, wraz z Benem Raabem, współtworzył limitowaną serię Beast BoyCowsill, Alan „2000s” w Dolan, s. 294: „Beast Boy...found himself in deep trouble during his first miniseries, courtesy of writers Ben Raab and Geoff Johns, with art by Justiniano.”., a w 2002 roku, wraz z Pasqualem Ferrym, stworzył story arc Return to Krypton w serii o SupermanieCowsill „2000s” w Dolan, s. 306: „Scripted by Geoff Johns and illustrated by Pasqual Ferry, the story delivered an emotional punch as Superman and his father were reunited.”.. Po napisaniu The Avengers vol. 3 #57–76 i Avengers Icons: The Vision #1–4 dla Marvel Comics, Johns nadzorował wydawniczy powrót komiksów z serii Hawkman oraz Teen TitansCowsill „2000s” w Dolan, s. 310: „None [of the Teen Titans series] had reached the heights of the Marv Wolfman and George Pérez era until writer Geoff Johns and artist Mike McKone’s relaunch.”..