Oh man, I'm loving the idea of a mime-siren :p

And Tunks: for the action skill dealio, I think it's just that just summoning a robot is what Gaige does, so maybe Maverick has some more specific function?

Oh, and a bit of clarification on Grendel's Rip and Tear, I was envisioning less as a Melee-mode like Brick and Krieg, and more like a charging attack designed for targeting a specific enemy or clump of enemies. Further upgrades might make it more viable for attacking more enemies though.