The Bullet Warlock, summoner of guns

The Spongestalker, Demon of the Deep. (Stats in the comments)

Thanios, The mad mom from Titan.

The floating sign of the obvious and the unknown

MeeMaw Silvia: Keeper of the Ancient Rhododendron

War hamster, small but a thug

Iridiumatium, Servant of the undying flame

Emu girl, bringer of chaos and eater of bread crumbs

Fake Beard Guy, Advertiser of T Mobile (tutorial boss)

Apocrita: The One True Hivemind

Adakar and Solaris, the polar opposites.