Joe and Mac are cavemen that come from an arcade/Super NES title of the same name. Being retro characters who's games did well, even one getting an HD remake, they have a descent shot of getting in. You control both Joe and Mac at the same time, like the Ice Climbers only better.
<-A-> Side Club
A ^ Upwards Club
A V Ground Club
B. Bone Spread: Joe and Mac hop up and throw out three bone projectile to damage the opponent.
<-B-> Boomerangs: Like Link's boomerang, only there's two made of stone that do more damage.
B ^ Electricity: Joe and Mac send lighting to the ground as they get boosted by the blast.
B V Fire: The clubs catch fire and senda wave of flame around the two cavemen.
Final Smash: T-rex Chomper
A T-rex appears in from of the stage as a big mouth that chomps all the opponents before spitting them out.