There's a real supervillan whose code name is Strongarm. This page is about the Whateley student.
Strongarm (? Lakeson) is probably an Exemplar, since he gives no evidence of having any ability that would suggest TK or Energizer talents. He's on the UltraViolent list.
He, Crunch and Legbreaker attempt to get back at Anna for showing Buster up in the combat finals. Strongarm's first, waylaying her in the underground tunnels. But the little squirrel-lover gets away!