Build NEW WORLD: Kamen Rider Grease hasn't revealed a single supporting cast for the movie till now but yesterday Kaho Takada (Misora Isurugi) had posted some pics from the making of the movie where Kouhei Takeda (Kazumi Sawatari / Kamen Rider Grease) is seen teaching Kaho-chan Baseball. The post clearly mentions it to be from the filming of Kamen Rider Grease.
The posts also shows the three actors of the Three Crows. Since they have undergone human experiment, their memory might have been revived. It is not known whether they will transform into Smash.