I can think of a few others in One Piece, but I'm going with White Beard. I can say that the producer didn't give him the attention that he deserved. During the war of the best, he was clearly the strongest, but the plot really needed his death for the world to change.
![image.png](https://images.ecency.com/p/4HFqJv9qRjVecs4xkhd5EvhidWEEBnn9tCVDBkBhQpUFvab78MhbU1VtQgLedkRGb1v2ngHKfhPQvxfX5yqvZcmaXybCbj5Ww3nnM3rwoDeVeQqF7fJNsVAt2yLwGieeeSZ5WRH7C78LLkwVYVZWJ7dVyj2EJsw5Eer.png?format=match&mode=fit)