Bravely Second - Neo Snowcap (99)
The strong Ba'al were only available through Japanese players at the time this video was made, hence the names of this one is in Japanese. It was released in EU by now.
Neo Snowcap has 9999 P.Def and M.Def so we need to think about how to do damage. With Ghosts, equipping Pierce M.Def is easy enough, even though we cannot use Chainspell any more.
For Defense, I took an easy way out. Neo Snowcap has mostly water elemental attacks, so an Iceflame Shield takes care of that. His other attacks are only used as single attacks, so max damage taken will be 9999. Auto Undo takes care of the rest. I just ignored Freeze, since I didn't need to act for defenses. Freeze does 10% maxHP damage, so having 11.112 max HP is needed for this to work out.
I used the first turn to rare steal some Unearthly Buns, which are also dropped (only for the gold border version). You can just Steal and Run, but this is best done against Apparati instead as that one doesn't Freeze.