[Omnikaiser]

I'm starting to think only half the rumors were true about who is merry, dapan and all.

It looks to me that the rumor were right about the actors, but not necessary about the roles.
Aoshima Kokoro being Tsumuri and Shida Nene being Sakurai's sister were right, most likely because they'll directly appear in Ep1. But I'm doubting about them being Merry and Dapan, it feels like leakers were trying to fill in the blanks about Rider's identity (hope I'm wrong, I'd like Tsumuri to be Merry).

For now, the trailer shows 6 men and 1 woman as the 7 participants.

Also, for me Ginpen is the guy with a goatee we see at 1:58 in the trailer, at least for now (pic attached). He wears the same uniform DGP participants are wearing and this appears just after a Ginpen and Buffa shot.