One of the guardian beasts of the LEVEL 2 of Impel Down, the "beast hell". It is based on the Greek mythological beast of the same na,e.

They are the gaolers of Impel Down. They don't talk, just make sounds. They seem to be those carrying meat to the underwater prison.

The main guard at the entrance of Impel Down. She is very strict (he is even strict with Magellan himself) and always asks that everything is done under the statutes. Sbe undertook the review of Boa Hancock, when she visited the prison. The Shichibukai, shrewdly, turned her into stone to let Luffy infiltrate into the prison.

He is the vice warden of Impel Down. He is one of the most powerful people working in the prison. He is always trying to get Magellan's position, causing riots in which he attempts to incriminate him. He tried to face Luffy, but he would be defeated and finally topped by Teach.

Magellan is the warden of Impel Down, as the most powerful person in the prison. He ate the Doku Doku no Mi, which lets him generate all sorts of highly toxic poisons, but also causes him an uncontrollable shits. Magellan has a long caree in the organization, he has witness the top two riots: Shiki's escape, in which Magellan was the vice warden, and the escape of prisoners led by Luffy, in which he already was the warden of the prison. In addition to his ability, Magellan is very powerful and was able to defeat Luffy and leave him almost death once.

The manticore are creatures that abound in the LEVEL 2 of Impel Down, they are able to devour the escaped prisoners, even to their bones. The manticore are able to understand human language, and often repeat some of the prisoners complaints. However, they often also say strangely perverted words as "Pants" or "Strawberry Panties".

After the events that occurred during the mass breakout of Impel Down, they added Minochihuahua as the new hell tormenting beast to defend the prison.

One of the four hell tormenting beasts of Impel Down that Sadie controls. He tried to stop the prisoners escape, but he was easily defeated by Luffy twice. According to Crocodile, he is a man with the power of an awakened Zoan Akuma no Mi.

One of the four hell tormenting beasts of Impel Down that Sadie controls. He tried to stop the prisoners escape, but he was easily defeated by Jinbe. According to Crocodile, he is a man with the power of an awakened Zoan Akuma no Mi.

Considered by Magellan the stronger and most formidable hell tormenting beast of Impel Down. Minotauros would be the responsible of giving Jinbe his first punishment in prison. Later, Minotauros tried to stop Luffy, Mr. 2, Mr. 3 and Buggy in LEVEL 4 of Impel Down, but he would be defeated by a combined attack of the four. He quickly recovered and tried to stop escape of prisoners, but he was defeated again.

One of the four hell tormenting beasts of Impel Down that Sadie controls. He tried to stop the prisoners escape, but he was easily defeated by Crocodile. According to Crocodile, he is a man with the power of an awakened Zoan Akuma no Mi.

An Impel Down doctor whom Mr. 2 usurping Hannyabal's identity asked about Luffy's status after receiving Magellan's poison.

Sadie or Sadie-chan, as he prefers to be called, is one of the gaolers of Impel Down, and the one in charge of keeping at bay the four hell tormenting beast. Sadie loves the sadism, and always gets excited to hear screams and complaints of the prisoners. Besides all this, Sadie controls a weapon, a whip powerful enough to cut the neck of an opponent instantly. During the prisoners escape, Sadie tried to deal with Emporio Ivankov, but in his feminine form, he manage to defeat her easily.

One of the gaolers of Impel Down, and the responsible for leading the Bulgori with his trident-flute. His name is usually confused with "monkey" (saru).

He is the most important beast at Impel Down. As the Manticore, he is able to repeat some human words, and in his case, he mentions names of pastas and noodles. He is an extremely powerful beast, being even capable of destroying a Kairoseki net with his claws.

Kanishitoru is one of the guards who escorted Buggy and Mr. 3 to LEVEL 5 without realizing that Hannyabal was actually Mr. 2.