Kathryn Hahn is an excellent *evil* Agatha Harkness but this is the true villain of the story for me:
I have not been this eager for a character to meet a horribly gory end since T.J. Miller's "WOULD YOU PLEASE SHUT UP!" guy was chewed to death by the Cloverfield monster.
"We took this thing apart and put it back together again a million times. Tried every type of power supply under the sun. When all we really needed was a little energy directly from the source."
I hate that guy. Yeah. I mean that using the actual definition. Hats off to Josh Stamberg.