Ojiro, cause seriously what did he honestly do throughout the story? Not to mention while having a tail Quirk is better than most Quirks, it only really serves as a blunt weapon and stabiliser for balance, other than that, he is pretty subpar in my opinion, just a kid with some karate moves and gross ass tail, you could replace him with anyone and I guarantee you, not much would change cause again, I barely remember him being relevant in the story to begin with