User blog comment:JustJacobGamer/SUPER SMASH BROS. 5 ROSTER LEAK!/@comment-25275196-20170518084006/@comment-25275196-20170520083816

It'll certainly be interesting to have Master Core and Final Destination to fight each other.

And even though it'll probably be a lot different in the final game (Nintedo has a habit of doing that), I reckon I'll speculate a bit on the Mario Bros. moveset. The A button will control Mario and the B button will control Luigi. The X and Y jump buttons will also be assigned to a specific bros, with X being Mario and Y being Luigi. Press A and B at the same time to use Bro attacks, which are the equivalent of special moves. The neutral special is the Fire & Thunder Bros, the side special is the Green & Red Shells, which will unfortunately crash the game if Green Shell is also in the match. The up special is the Dropcopter, which is one of the best recoveries in the game, and the down special is the Cyclone Bros.