Two characters fighting as one, so they share a health bar and they could switch between the two but the way I designed them you can only switch from certain attacks or after certain throws and they both use one style but have certain moves the other can't use
And with the girl who's a sadist, her meter only goes up if shes attacking the opponent and not when being hit unless she suffers a hi counter which angers her for a burst of meter. The guy is a masochist so he receives alot of meter from getting hit(he gains alot from hi counters since he loves those) but he doesn't get meter from attacking unless he uses a fatal rush which he and the girl switch out while doing it