Here's the third opening sequence of Power Rangers: Samurai that debuted on the show's 8th episode called, Forest For the Trees. In this new sequence, they added Rick Medina (Power Rangers Wild Force's Cole Evans/Red Wild Force Ranger) in the scene and credit him as Deker!
This isn't the first time that an old Power Ranger cast member played a different character for the franchise. Namely, John Tui played Anubis "Doggie" Cruger/SPD Shadow Ranger in Power Rangers SPD and later played Daggeron/Solaris Knight. Heck, even in this season we have Rene Naufahu who once played Emperor Grumm from Power Rangers SPD and now plays Mentor Ji in this season.