Rie Sonomura
I hope your dad pulls through. Good luck.
...The Cell Saga is fun, but a real mess. Though at least it does go with the "different futures" bit instead of trying to make it a pure happy ending. Since that's a major theory on how trying to manipulate time works. Frankly, Dragon Ball Super made it a lot more weird during its own future arc. Cell Saga, imo, handled it a lot better. And it was strange in the first place.
That said, Perfect Cell is still my favorite DBZ character. About a week ago, I picked up a set of drink glasses with him and Vegeta, via their POP! designs. Maybe I can find Frieza's someday for my complete list of my favorites. He's probably grouped with Goku though.