EoSD stage 2 midboss and boss
PCB stage 1 midboss
PoFV playable and early boss
Fairy Wars main and only playable character
DDC stage 1 midboss
ISC 1st day boss iirc
HSiFS playable character
And fighters don't matter, though I think she was on cover of one.
Now, how many times was Suwako a playable character? Cause I really think it's less than Cirno's three (3) times.