For Nightwing's full console character biography, click here.
- Nightwing's real name is Dick (Richard) Grayson and he was the original Robin. One of his ancestors was also a Talon, an assasin for the Court of Owls.
- Regime Nightwing's real name is Damian Wayne, and he is the son of Bruce Wayne and Talia al Ghul (Ra's al Ghul's daughter; which makes Damian his grandson).
- He is one of the only characters to not have a Challenge or Online Mode character (alongside Cyborg, Lex Luthor, and Shazam), although he has a Phantom Zone card, Nightwing/Batman Ninja.
- Nightwing is the first character to have at least one card in all four tiers: Bronze, Silver, Gold, and Nth Metal, later followed by Catwoman after the release of Catwoman/Batman Ninja.
- AI-controlled Nightwing has significantly faster basic attacks than player.