A trailer for the upcoming film, Kamen Rider Heisei Generations, was released along with cast information.
Dr. Packman’s true identity is that of a man named Zaizen, who worked for the Genome Institute as part of the mysterious Genome Project. Zaizen also has the ability to transform into a figure known as Genomes. According to Sano, the character of Zaizen resembles Frankenstein, a mad scientist who becomes obsessed with his work at the cost of everything else.
Sano has previously appeared in various tokusatsu films including Godzilla Mothra and King Ghidorah: Giant Monsters All-Out Attack, Godzilla 2000, and as Weeval/Ashurada in Kaizoku Sentai Gokaiger vs Space Sheriff Gavan the Movie.
Wrestler and celebrity Kamen Rider fan Hiroshi Tanahashi has also been cast in the movie as Soji Raise, the Roburu Bugstar.