Hero/Perry Moore/Holding

Perry Moore has the sinewy physique and golden looks of a California surfer, but get him talking about comics, and he can out-geek the biggest fanatic. He also has the fervor of an activist when discussing the dearth — and occasional shoddy treatment — of gay superheroes in mainstream comic books.

It is an issue close to the heart of Mr. Moore, who is gay, and he has funneled his passion into a young-adult novel. “Hero,” published in hardback last week by Hyperion Teen, tells the story of Thom Creed, coping not only with high school, sexual orientation and a strained home life, but also with his own budding superpowers. In telling Thom’s story, Mr. Moore, like some of the costumed champions he admires, hopes to right some wrongs.

“My publisher did not shy away from my mission,” he said during a recent interview near his home in Greenwich Village. That mission is a multipart endeavor to show gay superheroes in a positive light, to learn from his experiences with his father and to give younger readers a potential role model in Thom.