Clark the Combusted Cryptkeeper is a Secret Boss in TK Bahas Bloody Harvest DLC. He is found in the Necropolis.
Across from his crypt you will find 4 others. They each have some ornamentation on them:
A TV, a Skull, a Cauldron and a Pumpkin.
Triggers[edit]
You must complete both The Bloody Harvest & Trick or Treat
Kill Jacques O'Lantern - Lights the Pumpkin Crypt
Find all 6 Red Eyed Jack O'Lanterns - Lights the Skull Crypt
Find all 3 Possessed TVs - Lights the TV Crypt
Use The Sacrificial Cauldron - Lights the Cauldron Crypt
Behavior[edit]
He will move in close and try to keep within melee range throughout the battle.
He can use a flame breath, swing a buzzsaw axe or throwing it at you and loosing bursts of fire.
Keep on the move and use what little cover is available in the area.
Weaknesses[edit]
Aim for the head!