User blog comment:Thailog/Ep. 207 "Depths" discussion/@comment-68.1.145.12-20120709040450/@comment-5116372-20120710144115

Actually Nightwing is not the only Nichtwing (CHaracter not counting the Kryptonian Nightwing and FLamebird or what ever the other one is called) as Jason Tod has impersonated Nightwing before and a female who was Dick's lover also used a Nightwing costume so there are at least three human Nightwing that I know of.