In a recent interview with The Daily Beast (via CBM), McKenzie revealed that the Graysons are just a few of a number of classic characters from the Batman mythos who might be popping up on the freshman series.
"The Grayson's may appear this season," McKenzie said. "I'm not 100 percent sure yet, but I think so."
In the comics, the Graysons, better known as the Flying Graysons, are a family of traveling acrobats who are murdered in a mob hit during a performance. Orphaned and without any surviving family, a young Dick Grayson is adopted by Bruce Wayne who eventually trains him to become Robin, the Boy Wonder and sidekick to the Caped Crusader.
Other Gotham alums set to appear on the hit Fox series include Nicholas D'Agosto as Harvey Dent and Morena Baccarin as Leslie Thompkins, Mckenzie notes.
"They just hired Morena Baccarin on Gotham to play my love interest, Dr. Leslie Thompkins, and she said, 'Hey, I did an episode of The O.C.!' and I was like, 'What!?'"
Gotham airs on Mondays at 8 pm. E.S.T. on Fox.