George Karizaki is a former Fenix scientist and the creator of the Revice System who briefly became the third Kamen Rider Demons and later temporarily Kamen Rider Juuga.
Based on a spider and spider web. Spider Genome is the default form of Kamen Rider Demons.
Accessed by stamping the Spider Vistamp on top of the Demons Driver before stamping it in the center slot of the Driver.
Demons can utilize other Vistamps with the Demons Driver to access Genomix forms.
Based on an anomalocaris.
Multi-Genomix form that is also combined with the use of the Batta and Scorpion Vistamps.
Accessed by stamping the Anomalocaris Vistamp on top of the Demons Driver before stamping it in the center slot of the Driver.
Demons possesses the Demon Bradior, claw-like armaments with the aesthetics of Kamen Rider Black.
Combined with other Vistamps, Demons overpowers Jack Revice with brute strength.
Using the Juuga Driver with the Juuga Vistamp, Karizaki transforms into Kamen Rider Juuga.
Being a direct reference to one of Karizaki's favorite Kamen Riders, Juuga's design pays homage to Kuuga's Ultimate Form.
The Ju in Juuga's name is a reference to the number 10, as in the first 10 Vistamps used by Kamen Rider Revice before gaining access to the Barid Rex Vistamp.
Based on Kamen Rider Kuuga Ultimate Form.
Accessed by inserting the Juuga Vistamp into the Juuga Driver.
Juuga possesses the powers of the first 10 Vistamps used by Kamen Riders Revi and Vice: