We have the cast members for the new rival characters, the Ultimate 4, showing up in the next Appmon story arc!We first found out these four characters would be playing a major role a few weeks ago, but now we have cast info for them, and the casting is a bit of a doozy.First we have Yuichi Nakamura as Charismon.Nakamura has far to many credits to list and is a major, well known, voice actor.Just a small sample of some of his credits are: Shinomiya from Food Wars, Tomoya from Clannad, Gray in Fairy Tail, Karamatsu in Mr. Osomatsu, Mumen Rider in One-Punch Man, and the list literally just keeps going on.Charismon is an Appmon with the Mind Control ability. It is especially skilled at using the power of suggestion to influence even strangers. It brainwashes the target with its technique in conversation, and manipulates them according to its will.Next up is Ayumi Tsunematsu as Beautymon.Another voice actor with many credits big and small, but has had some notable big roles including: Marina from Gundam 00 and Matt from Zoids Fuzors.Beautymon is an Appmon with the Beauty ability, who is considered the ultimate personification of beauty in this world. It sports not just looks, but also a beautiful voice and elegant dancing ability; with its every action, it captivates everyone around and doesn't let them go.Third is Tetsu Shiratori as Fakemon.Another accomplished voice actor that a good chunk of you may have heard before. Some of his better known roles are: Lloyd Asplund from Code Geass and Sai in Gundam Seed.Fakemon is an Appmon with the Disguise ability. An evil clown that deceives the entire world with its lies, using its unparalleled skill in forgery.Last, but certainly not least is Takehito Koyasu as Biomon.An actor with so many credits we can't even scratch the surface.A small sample of his credits include: Optimus Primal in the Japanese dub of Beast Wars and Beast Machines, Bobobo-bo Bo-bobo in Bobobo-bo Bo-bobo, Dojima in Food Wars, Shinsuke in Gintama, Luke Valentine in Hellsing, Raizer in High School DxD, and Takahashi in Initial D.I could literally keep going with him forever going through the roles people are likely to know him from... so I'll go ahead and list even MORE since no doubt some people will wonder why I didn't list some of his other well known roles: Dio in JoJo's Bizarre Adventure, Mu La Flaga from Gundam Seed, Zechs from Gundam Wing, Aoba in Evangelion, Claude in Nisekoi, Aokiji in One Piece, Yosho in Tenchi, and his finest (or most annoying depending on personal preference) role... Excalibur in Soul Eater.Biomon is an Appmon with the Life ability. A famed, powerful doctor, it is said that "There is no patient that Biomon cannot cure". For Biomon, whose knowledge of living organisms encompasses all, even surgery is akin to child's play.Charismon, Beautymon, Biomon, and Fakemon make up the new group 'the Ultimate 4', a group of Ultimate grade Appmon who will start showing up in Appmon in the new story arc . The Appmon Twitter also asks whether these new characters are friend or foe?Update- Added full profile information for each Appmon. Thanks to garm for the translations!