A second big-name cameo almost happened in the latest Kamen Rider movie.
Masaki Suda, who played Phillip from Kamen Rider W, almost appeared in Kamen Rider Heisei Generations FOREVER. The production crew of the movie sent out an offer to Suda, who wanted to appear, but was ultimately unable to. Suda’s schedule was said to have been completely filled for the next two years with roles and performances after his music career took off.
Takeru Satoh, known for his role as Ryotaro Nogami/Kamen Rider Den-O, appeared in the movie, surprising audience goers. His role was kept completely hidden from the world, with special measures such as driving into filming locations through underground paths being taken.
Source: Yahoo! Japan