Kidd is a huge fan of comic book media, particularly Batman, and has written and designed book covers for several DC Comics publications, including "The Complete History" of Batman, Superman, and Wonder Woman, "The Golden Age of DC Comics: 365 Days", and the aforementioned "Jack Cole and Plastic Man". He also designed "Mythology: The DC Comics Art of Alex Ross" and wrote an exclusive Batman/Superman story illustrated by Ross for the book. Kidd once stated that the first cover he ever noticed was "no doubt for some sort of Batman comic I saw when I was about 3, enough said. Or maybe not enough said: the colors, the forms, the design. Batman himself is such a brilliant design solution." Veronique Vienne, who wrote an eponymous book about Kidd in 2006, described Kidd's Batman fandom as a "childhood obsession and lasting adult passion".