Ultimate 4

The Ultimate 4 (アルティメット) are four extremely powerful grade Appmon and the supporting antagonists in Digimon Universe: Appli Monsters. They are Leviathan's handpicked generals.

History
The Ultimate 4 were gathered by Leviathan to aid Knight Unryuji after he became L-Corp's CEO. They watch as Knight unleashes an L-Virus-infected over L-Town. They later show up to the Applidrivers after Eri Karan refuses Knight's offer of working for Leviathan. They then fought the 4 of them, effectively winning, destroying their Appli Drives, and killing their buddies. Fortunately, Yujin and stepped in and sent the Drivers back to Earth before the Appmon got a chance to kill them.

Charismon


Charismon is the Appmon of the Mind Control app.

Charismon believes Leviathan's goal will create an ideal world, and claims Minerva is jealous of Leviathan's progress.

Biomon


Biomon is that Appmon of the Life app.

Biomon loves performing operations on others. At some point, he rearranged Hajime Katsura's data on Leviathan's orders, and claims to have enjoyed this operation the most, as the result was "unbelievable".

Fakemon


Fakemon is the Appmon of the Camouflage app.

Fakemon loves lying to others.

Beautymon


Beautymon is the Appmon of the Beauty app.

Beautymon claims to be the most beautiful Appmon of all, but is actually insecure about her appearance, and gets angry when anyone says someone else is more beautiful.