i just got to thinking, ash would make a nice charchter. he's the main charchter of the franchise, and everyone knows him. he could have standard punches and kicks but for specials and throws they could be pokemon from pokeballs he calls. of course, summoning the pokemon for the attack could be either by throwing the ball or ...sumthing. but here's my idea
B= a projectile attack - like a bulbasur razor leaf maybe
up+B = a flying attack - using sum flying pokemon in a way that rises him up
while also attack
down+B= a evasive attack - sumthing like a quick flash of night shade,turning the screen dark for 2-3 secs (or even less)
forward+B=charge attck - sumthing like the "take down" or "skull bash" attack
"mega speical" - the one special that everyone seems to have (which is new)
he could do sumthing like unleash all his pokemon and loose a stream of thunderbolts, flamethrowers, icebeams, hyperbeams etc.