Talon (real name William Cobb) is one of the major antagonists of the Nightwing series. He is the grandfather of John Grayson, and therefore, the great-grandfather and one of the rivals of Dick Grayson and Melinda Zucco. He is an assassin for the Court of Owls who also vowed to turn Dick into a Talon like him.
Batman & Robin: Poison Ivy • Mr. Freeze • Bane • Snowy Cones Thugs • Golums • Jason Woodrue Batman vs. Robin: Court of Owls (Samantha Vanaver • Talon • Owls Lieutenant • & Talon Warriors) • Dollmaker