Nightwing
Nightwing is a fictional superhero appearing in American comic books published by DC Comics. The character has appeared in various incarnations, with the Nightwing identity most prominently being adopted by Dick Grayson when he moved on from his role as Batman's vigilante partner Robin.
Nighthawk (DC Comics)
Nighthawk is a fictional character, a cowboy in the DC Comics universe. His real name is Hannibal Hawkes and he first appeared in "Western Comics" #5. In his secret identity, he worked as a traveling repairman. He had a sidekick named Jim Peyton.