You see Son of Verminor
"Blubb."
Notes
They are not biological sons of Verminor.
Abilities
Melee (0-460) causes poison, Poison Hit (150-200), Poison Berserk (350-390), Curse Berserk (220-270), Creature Illusion (appears as a Rat, Larva, Scorpion or Slime), Self Healing (250-350).
Damage Taken From Elements
Physical 
Death 
Holy 
Ice 
Fire
Energy
Earth
Location
Deep in the Pits of Inferno, in Verminor's throne room. Also in the Demon Forge (The Vats and The Hive).
Strategy
Kill it fast using ice, holy, or death runes/spells and Exori Gran.