The ??? is a boss from Final Fantasy Crystal Chronicles: Ring of Fates. "???" is actually the possessed body of Latov. "???" is fought in the Shadowland alongside Lich. He attacks with a medium damaging axe attack, but performs it slowly and is slow to approach. He can combo the attack into a 2 or 3-hit combo, but other than that, it is all he can use.
If the player wishes to end the fight quickly, they can use Holy, as he is weak to it.