Lord Khormethius is the evil mutant overlord of Garlok.

He serves as the series' main antagonist.

Dom has stated he hates Khormethius more than any other mutant he has ever killed.

Dom also stated to Eichorn that the severed head of one of Khormethius' minions is on his shelf.

On an end table in his living room, Dom has a 12 inch tusk in a jar, possibly a souvenir from an elephant/mammoth like Mutant creature.