Callas is the main antagonist of the videogame Kamen Rider: Battride War.
Callas was once a Foundation X scientist that named Susumu Karashima. However, he was trapped in a dimension of bird cage named Mnemosyne with his former wife, Rie Kanai.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.
After Karashima trapped in a dimension of bird cage named Mnemosyne with his former wife, Rie Kanai, he became a flying dark energy ball with wings and tails while naming himself Callas. The dark energy which he emits representing his dark and evil nature.
- 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.
- Due to being a flying energy ball, Callas is able to transform into Kamen Rider Decade Violent Emotion. 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.
- 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.
- Height: 192 cm.
- Weight: 83 kg.
- Punching Power: 5 tons
- Kicking Power: 10 tons
- Maximum Jump Height: 30 meters
- Maximum Running Speed: 100 meters per 5 seconds
As this form is Decade's false final transformation into the destroyer of worlds, with Decade's body in a lighter shade of magenta, the eyes assuming a more sinister appearance, and the normally yellow Signal Pointer (the light on Decade's helmet) is violet.
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 Wizardand orders him to destroy the Mnemosyne.
- Main article: Decadriver
Though armed with the Decadriver, but it doesn't do much as it only an imitation of the real one.
- Ride Booker
- Main article: Ride Booker
Callas (as Decade) only shown to have two sets of Attack Ride Cards.
The Attack Ride Cards allow Callas while in the form of Decade to perform any of their own attacks.
- His current name, Callas is an anagram of his human name, Susumu Karashima with his name being rearranged Karashima Susumu. Also, his name is a japanese word for Crow: a bird.
- Strangely enough, Callas is an exact opposite of Canaria.Callas is voiced by Hōchū Ōtsuka. Otsuka previously voiced Deneb in the Kamen Rider Den-O and Xaviax in the Japanese dub of Kamen Rider Dragon Knight as well as the voice of Xigbar from Kingdom Hearts and Zephyr from One Piece.