One Piece: 8 Characters Who Need Haki Upgrades, Ranked

Haki is one of the most important powers in the One Piece world, and it is especially important if one is to sail through the perils of the New World. On the sea, only the strongest survive, and the strongest, more often than not, tend to be good users of Haki. While fans have seen the introduction of quite a lot of powerful Haki users in One Piece, especially after the timeskip, there are those who, despite having this amazing ability, have not made the best of it. These characters need to push their Haki beyond their current levels if they are to reach the next level of power.