Tantrum

Tantrum was en route to a coffee shop to write some dreadfully bad poetry and sneer at normal folk when she undeservedly got everything she’d whined for her entire teenaged life—her mutant powers emerged, and she gained command of "evil forces." Tantrum is a powerful telekinetic, but she has to be touching what she's manipulating.
She took advantage of the Silver Storm to get into a tussle with heroes, and was soundly beaten by Jelly Black. And picked up the nickname of "Bite my butt" from Coqui. Conquistador and Skyler have worked out an agreement with AEGIS, and Tantrum is in councilling.

Calm Down? Little Girl!? Oh, now you're gonna pay!