He was voiced by Masami Iwasaki.
Kamen Rider Fourze
Suddendath Beta appeared to attack Amazon and Fourze, seeking to avenge his predecessor's death. The two Riders fought Suddendath over the course of a week and managed to defeat him.
Heisei Rider VS Showa Rider: Kamen Rider Taisen feat. Super Sentai
Suddendath Beta was one of the monsters resurrected as part of the Underground Empire Badan. After the 15 Heisei Riders and 15 Showa Riders united to take down Badan, Suddendath Beta was seen battling against Skyrider.
Kamen Sentai Gorider
Suddendath Beta was one of the monsters who were part of the endlessly reviving army of Shocker kaijin summoned by Kuroto Dan as part of his scheme to revive himself. After Kuroto's plan was unveiled and entered its final stages, Kuroto set the Shocker army loose on the real world. However, the newly formed Kamen Sentai Gorider was able to fight off and destroy the monster army.