Vader (x1)
Vessery (VI)
Stele (x1)
And whatever other upgrades you feel like to taste; there's a whole lot of options. Vader is a must-kill ace, as always. But Vessery and Stele are sledgehammers, and Vessery will be stripping shields for Stele's super-crits...
None of them are really enemies you want to face in endgame. Even with target painters gone, a Defender is still a Defender, y'know?
