Ivankov is the most powerful prisoner in Level 5.5, "Newkama Land." When Luffy crashes through the ceiling, Ivankov initially refuses to help. The episode showcases the political weight of Ivankov—a former revolutionary commander who went missing years ago.
This is not a flashy fight episode. It is a psychological horror episode. We watch Luffy undergo an agonizing purification process. The English voice actor for Luffy, , delivers a gut-wrenching performance. You hear every scream, every tear, every desperate gasp as Luffy refuses to die. One Piece -Dub- Episode 373
For those searching for , you are likely looking for more than just a summary. You want to know if the dub holds up. Here is the verdict: Ivankov is the most powerful prisoner in Level 5