Has a character who grows giant ever been successful? Bonus points if it's a main character.

It's a pretty common trope that characters who grow giant are usually weak and lose their fights to normal sized characters all the time. I can't think of any main character who's power is to grow bigger that's done anything substantial. Probably doesn't help that the power to enlarge yourself in and of itself is pretty boring and doesn't exhume main character aura.

The only character I can think of off the top of my head is maybe Choji? Honestly I don't remember most of his feats outside of the OG series.