Strawhats aside , some of mine are: Oden , Yonko , Akainu , Doflamingo , Rayleigh , Ace , Roger , Law , Coby , Katakuri , Gorosei , Im , Shirahoshi , Vivi , Kuma
It would be nice if you didn't name drop like I just did and elaborated about why you think X character was so impactful or important...