Zero

Nexa Grayson is Dick's older sister who is way too overprotective of him; doesn't want him to get hurt in any way and wants him to quit trying to be a superhero with his mentor, Bruce Wayne. The Batman was bad news to Nexa, the opposite to Dick. Dick looks at him like he's some sort of god. Nexa, however... thinks he's all bark and no bite. Sure, he could smack a man into Christmas Eve, but that's almost all he can do.

Until Dick asked her to go out patrolling with him and Bruce Wayne. Dubbing herself as the Razer Blade to the villains of Gotham City, she'd made herself known, fighting alongside the Batman and Nightwing.

Until Batsy started falling, off a building for RB - literally.