M-DEUS

M-Deus is a secret boss in Tokyo Mirage Sessions ♯FE.

Overview
M-Deus is an optional boss that can only be fought in a New Game +. He can be challenged in the Urahara Arena. M-Deus is an extra-powerful boss patterned after Medeus with a level of 99, making him the most challenging fight in the game on all difficulty levels.

Etymology
M-Deus's name is a direct play on Medeus. "Deus" is also the Latin word for "god."