So, have you heard of the Music Meister from an episode of Batman: the Brave and the Bold? His origin sounds like something that could happen in Worm. “Bullies used to pick on me because I sang in Choir. But something very strange occurred when I kept singing higher. The ruffians around me quickly fell into a trance. And it was then with wicked glee I made those puppets dance.” He sang it. He controls people with his singing and makes them sing and dance while doing stuff for him.

Oh, nice. That really does sound like a good trigger event for a siren power similar to Canary’s (but stronger, by the sound of it).