The boy who was once Batman’s sidekick is now a man.

Like an amped-up version of Jason Bourne or James Bond, the character whose crime-fighting alter ego was once Robin now travels the world as a spy in a series whose writing team includes a former C.I.A. agent. In this incarnation, Dick Grayson has killer abs and a habit of setting hearts aflutter.

Unlike those who get their superhero knowledge from television shows or blockbuster movies, comic-book aficionados long ago got used to the notion of this character as something more than Batman’s wimpy No. 2.

With the monthly “Grayson” series, whose first collected edition will be released on June 3, DC Comics is making a bigger push on behalf of the man who was once the junior member of the Dynamic Duo.

“I don’t think that Robin is treated as a joke in the comics, although he certainly has been made fun of by people outside comics,” said Peter Sanderson, a comic book historian.