Seth's power is supa speed like sanic so perhaps hand him hold a hand up but its blurry so as to show he's vibrating it at superhuman speed? 

Also everybody I need to know what your characters went on to do after taking down Callahan. I ask because there is the potential for them to be essential NPCs in the sequel.

Edit: just realized you wouldn't know what to write without knowing the setting. Hold off on that.