i use waluigi hes got fast movement and good defence although his passing kinda sucks.
i used yoshi in the begining because he was equal pretty much on everything but i felt he wasnt that powerful (shame i love yoshi!).
then for the little field set up of balance and power and whatnot, i went with bones and 2 shy guys.
im kicking my boyfriends ass thats for sure! lol.
as long as you get someone with semi good speed and better defense, youll be unstopable!