Backlash is an Alpha teammate and has been for at least a few years, though I haven't ironed out the timing of everything yet. He's a loud and obnoxious sort of guy who casually flirts with pretty girls, but maybe not as much as his brother Blitz. Maybe we can give them a playfully antagonistic thing, where they feel comfortable giving one another a hard time because they know the other can take it?
This "hard time" they give each other could possibly include dignity compromising pranks, if that's something Elia would indulge him in. I think officially they call it "team building exercises..."