Perfect

Perfect (完全体 Kanzentai) is the term used which refers to the 5 th stage of Digimon evolution, also referred to as level V. (Dub: Ultimate).

Perfect Digimon are those that survived the toughest part of evolution and are now among the strongest Digimon. They evolve from the Adult form and sometimes, though very rarely, can evolve onto Ultimate.

Some media has referred to this stage as Ultimate (アルティメット, Arutimetto), presumably to try and avoid confusion with English media. This is seen in Digimon Story: Sunburst & Moonlight, as it refers to Algomon with the name アルゴモン アルティメット (Algomon Ultimate).