Callas

is a character who appears in the Kamen Rider: Battride War and also the main antagonist in the game.
==History==
Callas was Foundation X's scientist that named . However, he was trapped in a dimension of bird cage named with his former wife, .
thumb|left|Callas as Decade Violent Emotion.
As he became a dark evil spirit entity called Callas, she instead becomes a light pure entity named Canaria with growing wings and tails. Later, after his troops had been defeated by the Riders, Callas assumes the form of Kamen Rider Decade Violent Emotion and battles Decade.
Though their power is same, Decade is aided by Wizard and orders him to destroy the Mnemosyne. Panicked, Callas abandons him and tries to protect the Mnemosyne, but Canaria stops him even by entering the cage and Wizard quickly finishes him along with the Mnemosyne. Callas however survived the assault but in return he transforms into an energy ball and leaves with his former wife.
==Abilities==
*False Memory:Unlike his counterpart/former wife Canaria, Callas is able to implant a false memory or propaganda on Kamen Riders. The Riders he used is Skull, Eternal and NEW Den-O. It's possible that the riders regained their original memories after his defeat.
*Shape-shifting:Due to being a flying energy ball, Callas is able to transform. However, unlike his template, Decade, he can only gain access into Decade's power not the previous Riders' power as he can be seen equally matched with Decade.
*Portal:Callas can also create a portal, allowing his followers to escape or forcefully sucking the Riders in order to turn them into his followers via brainwashing process.
==Forms==
==Equipment==
===Devices===
*Decadriver - Transformation device
*Rider Cards - Gives Decade the powers of Heisei and Shōwa Kamen Riders, depending on which card used
===Weapons===
*Ride Booker - Decade's primary weapon and essential for holding Rider Cards
==Behind the Scenes==
===Voicing===
Callas is voiced by . Otsuka previously voiced Deneb in the Kamen Rider Den-O and Xaviax in the Japanese dub of Kamen Rider Dragon Knight.
===Etymology===
His current name, Callas is an anagram of his human name, Susumu Karashima with his name being written Karashima Susumu in Japanese order. His name is also the Japanese word for , a bird.
Category:Villains
Category:Video Game Exclusive Characters
Category:Foundation X
Category:Kamen Riders
Category:Leader
Category:Video Game Riders
Category:Card Riders
Category:Non-human Riders
Category:Wizard Riders