Remaining:

Funguar, Bite Bug, Red Bat, Gayla, Gesper, Fastitocalon-F, Caterchipillar, Grat, Buel, Glacial Eye, Thrustaevis, Jelleye, Grand Mantis, Armadodo, Fastitochalon, SAM08G, Death Claw, Cactaur, Abyss Worm, Turtapod, Vysage, Blitz, Wendigo, Behemoth, Elnoyle, Granaldo, Shumi Tribe, Chubby Chocobo, Angelo, Gilgamesh, Minimog, Chicabo, Shiva, Carbuncle, Leviathan, Pandemonia, Ward, Kiros, Laguna, Selphie, Quistis, Irvine, Rinoa, Squall.

I thought I covered the monsters immune to poison in the first two lists, so I'm starting to wonder if it's a monster.

Is it Angelo?