While I know this casting idea is so far out of the ballpark, it just might work,
Astro as Night Thrasher
SHIELD Director Phil Coulson and his team investigate reports of a young skateboarder vigilante beating up gang members and criminals in order to protect his neighborhood and for revenge against what happened to his family. Something he can't remember happening....
Just watch this kid in his "Person of Interest" episode...
And as what Hollywood would call a "Proof of Concept" video for Killgrave, The Purple Man. He can manipulate people into doing what he wants, and it turns their skin purple.
http://youtu.be/Z0rGLfuh8Ws