You see Defiler
"Blubb"
Notes
Somewhat related to Slime. The Defiler's bosses are The Plasmother located in Verminor's throne room and The Abomination in Ankrahmun(Although this boss was only seen in test servers).
Abilities
Melee (0-250), Poison Missiles (160-270),Green Sparks UE (poisons you), Paralyze, Self-Healing, Curse Wave (?).
Damage Taken From Elements
Physical 
Death 
Holy 
Ice 
Fire
Energy
Earth
Location
Pits of Inferno, Edron (In the Vats during The Inquisition Quest).
Loot
0-280 gp, 0-4? Platinum Coin, Death Ring, Demonic Essence, Soul Orb, Talon, 0-3 Small Emeralds, 0-2? Small Ruby, 0-1? Small Diamond, Plate Armor.