ZOne was a disappointment for me . How cool would it have been if ZOne was actually Yusei , it could ' ve brought in some really good character development , a great twist to everything . But in the end he just sort of came out to be so generic in Anime . I feel like I ' ve seen his formula a million times before . I think the greatest Antagonist in Yugioh is Yubel or Supreme King . Yubel ' s motives are truly the most unique villain motives in the Yugioh Franchise , while also being unique in terms of Anime . Her motive was that she was in love with Judai , and her time in isolation made her think that too express love you needed to do it through pain . And then having Judai become the Supreme King and killing his friends just brings so much great character development and a great twist . Honestly 5 D ' s had a lot going for it , it really did , but story and character development got shoved aside for marketing . Aki was supposed to be one of the main three and Crow was supposed to be a villain which would ' ve been great . It would ' ve given us a strong female character while good character devolopment seeing how Crow grew up with Yusei and them . But they thought that Blackwings would sell better so they sidelined Aki to give Crow more time to shine . Then it continously happened after the Dark Signers arc where the only two people that didn ' t lose were Crow and Yusei , and Yusei was just too perfect . Atleast Yami had some character development when he got Yugi killed .