The final pair of Seacons have now been added to the TakaraTomyMall website, for release in late March.
Overbite the shark and Tentakil the octopus (for 4180yen each) or both together for 8360yen.

Images of all five modes of each toy (bot, beast, gun, leg, arm).









Apparently in America, the Seacons ended up being Pulse store exclusives, as it looks like Hasbro America weren't letting anyone else sell them over there.

Fortunately for us, this third pair will be up on the EB games website in the next few days.