Shin Megami Tensei: Digital Devil Saga

This boss is the main protagonist from Shin Megami Tensei III: Nocturne, known as Demi-fiend or Hitoshura. In DDS, he's the hardest optional boss you face in a Clear Data.

Probably the hardest boss in RPG history, you don't stand a snowflake's chance in hell unless you have the ultimate level 99 party with the best skills, along with stat-boosting items. Not only does this fight require a complex strategy, but you need the luck of the Irish to survive this onslaught.

Part 1: Intro (0:00-1:47)
Part 2: Surviving Gaea Rage* (1:47-3:27)
Part 3: "Stun Locking" Pixie and Arahabaki (3:27-4:37)
Part 4: Finishing Demi-fiend off (4:37-5:42)

*I'm supposed to get hit by Dormina and use Null Sleep to ...