Borderlands 2Cryptkeeper Clark

Clark the Combusted Cryptkeeper spawns in the "T.K. Baha's Bloody Harvest" Headhunter Pack after completing 4 tasks:

1. Defeat Jacques O'Lantern or the Pumpkin Kingpin.
2. Find 3 unique TVs in the Hallowed Hallow.
3. Destroy 6 red-eyed pumpkins scattered around Hallowed Hallow.
4. Use the Loot Cauldron.

Each task ignites one of 4 torches.
When all are lit, he spawns.