Veronica is too strong.

[EnclaveKnight]

Boone is the one that gets overpowered to me specially in combination with ED-E, he sometimes kills enemies before you even realize they are there, who hasn't had a mini heart attack when the camera suddenly focuses on some dude's head blowing up (with killcam on) just to realize inmediatelly that Boone just killed a hapless Viper dude.

I am really going with Kilgore Trout, Give Cass a Minigun, or assault carbine, or even a riot shotgun (plus ammunition), and she can basically destroy anything.