More ideas from Usa
Is that Deadpool?

Probably not if she actually got stabbed (would she even allow that to happen?), but I can imagine Ciana being extremely sarcastic towards anyone who tried to stab her.<<<this would be a good dialogue if you are writing a witty character

Telling off the whole Justice League and Batman; only Dick Grayson can accomplish such a thing.

Basically telling Superman, the Flash, Wonder Woman, Green Lantern, and BATMAN to piss off - Nightwing is possibly the ballsiest superhero in DC.