Re: this news^
According to Enterprise, Superman comics exist in the Trekverse. Therefore it goes to reason that so do Batman comics and that Dick Grayson is a fictional character within that universe.
As the tree said to the lumberjack: “I'm stumped!”
It was in the teaser of "Shuttlepod One" (season one, episode 16). Reed and Tucker get into a discussion about the merits of British literature versus American literature. Reed is reading Ulysses
by James Joyce and makes some pejorative remarks about Americans not having an appreciation for culture or high-brow stuff. Tucker mentions learning a lot from Superman comics or something like that. But he does mention reading Superman comics.