It's rather easy:

Depending on the strength, weakness and formation of the striker, give him/her/it that many number of uses. Like in MvC you could use colossus 3 time's, and he would sweep in doing a maximum of 5 hits each time. Though Cyclops you could use 5 times, yet his attack would only hit you once. And Devilot... well, Devilot was a beast, unblockable but Imobile. We need a devilot In the Game for a Corner Counter. But I'm sure you guys can think of moves and such. =D