The four named villains Boomer, Twister, Scorch, and Brick are the only supervillains at present. 

Abysse, I can certainly see her doing that but she kinda has to explain how she managed to break the barricade the National Guard set up. 

And she's probably gonna get hit. A lot. This is a fight involving the most powerful not the squishy ones :P

Archmage, By magical ward blocking all magical access it pretty much means no fully supernatural creature, MC, or any other outside spell could enter or penetrate until it was taken down.