We may be seeing some monthly scans soon because this interesting oddity popped up: Appearing in Choh Superhero Taisen is Kamen Sentai Gorider! These are basically the original Kamen Rider mixed with the original Super Sentai, and somehow it works.
Another notable returning actor shown on the right is Utsusemimaru/Kyoryu Gold from Kyoryuger.
There’s a lot of Rider/Sentai teams shown here, mostly sorted by color. The five we’ve seen in promos is Team Ex-Aid, while on the top left is Team Genm.