Phelesmon

Phelesmon is a Fallen Angel Digimon whose name and design are derived from the fictional Mephistopheles. It is shaped like an aristocrat, and in exchange for granting someone their desires, it is said that it will snatch away their soul. It's said that it is a Boogeymon that advanced and digivolved, but the details are still uncertain.

In Ultima,

Attacks
 * Black Statue: Changes the opponent into a black stone statue.
 * Demon's Shout: Drives the enemy to insanity with a curse-filled shout.