Heracles

Heracles (ヘラクレス, Herakuresu) is a strange man that resides in the Greenstone forest in the Boin Archipelago. He is dressed in a beetle suit and uses a spear and explosives for combat. He saves Usopp twice, once from being attacked by a giant Hercules Beetle, and the other time from a Man Eating Plant. His attacks are apparently very fast.

Appearance and Personality
Little is known about Heracles apart from the fact that he lives in Greenstone Forest and knows about the various dangers present on the Boin island. He is seen dressing up in a hero costume with a mask that covers his face and a mantle. He has an odd habit of adding "n" word to people's name. Though round in appearance he is fit and strong which is evident from the way he defeated a giant beetle and man eating plant with a single kick. Though laid back in approach he is quick to react when he senses dangers and seems to care for Usopp's well being and saved him from being eaten a couple of times.

Straw Hat Separation Adventure- Boin Archipelago
Usopp encounters Heracles on Boin Archipelago where he is sent by Kuma. Heracles is first shown in Chapter 524 when he rescues Usopp from the giant beetle. Usopp though thankful of Heracles looks in shock at his proposal to eat the giant beetle. While Usopp is distracted a giant man eating plant tries to devour him but Usopp is saved again by Heracles. Heracles informs Usopp to be more careful if he wants to keep his life and possessions. In the cover story of Chapter 550 Heracles is seen alongside Usopp eating spaghetti in a bowl while Usopp gleefully looks at the food around him. In continuation of the cover story Usopp is shown to have become fat in Chapter 551 and Heracles is shown alongside him in shock.

Usopp learns about the events of Marineford War and tries desperately to get off the island to help his ailing friend Luffy to get over trauma of Ace's death. Heracles is shown trying to stop Usopp from fighting a giant beetle. Usopp attempts to get past a giant beetle but fails and Heracles informs Usopp that more and more dangerous creatures will appear as he tries to go away from the centre of the island. But Usopp doesn't listen and takes off again regardless of Heracles' warnings. Heracles tells Usopp that escaping the island is impossible because of the giant creatures that get attracted to the aroma of the island. Heracles notices that the island is beginning to move and warns Usopp to cling to something as we find out that the island is actually a large carnivorous plant called the Stomach Baron. The island moves again and Heracles saves Usopp from falling into the island's mouth. Heracles then asks Usopp what's wrong. Heracles notices that Usopp's behavior changed after reading a newspaper that was dropped by a news coo. Usopp answers by saying that Luffy is in pain after losing his brother and that he needs to be there for Luffy.

Anime Only
In the anime only episode 455 Usopp is shown to be running away from a giant sunflower plant with Heracles watching on. Usopp asks Heracles to help him against the giant sunflower plant who is trying to eat him alive. Heracles manages to save Usopp & tells him to build up stamina as he is weaker than ants and worms on that island. After initial denial Usopp agrees with Heracles when he sees a giant ant and worm. Heracles easily beats both the ant and the worm and asks Usopp if he wants to eat them. Usopp in his traditional fashion looks in utter disbelief at Heracles's proposal. He then informs Heracles that he is hungry and wants to eat something edible. Heracles takes him to a place where items like ramen, spaghetti, ham and chocolates are available in plenty. Usopp starts to gulp down the items and is told by Heracles to also work out to build stamina as eating alone won't do it.

Later Heracles loses sight of Usopp who is busy eating out all the delicacies available on the island. When he finds him Usopp has already turned fat. Usopp is told to lose some calories when all of a sudden the island starts to move and eats everything on it. Both Usopp and Heracles try to escape. Heracles is able to catch hold of a branch and tries to catch Usopp but Usopp becomes too heavy for Heracles to hold on to. He waves his goodbyes to Usopp believing it is inevitable that Usopp will be eaten. But Usopp catches a ramen branch and eats it to climb up and escape. Later Heracles finds Usopp and tells him that fat things will definitely be eaten on the Boin Archipelago. He also informs him that it is impossible to escape the island.

Trivia

 * He often adds "n" to the end of sentences (in Japanese). For example, He called Usopp (Usoppu ウソップ) Usoppun (Usoppun ウソップン), and he himself is Heraclesun (Herakuresun, ヘラクレスン). He also has a habit of repeatedly introducing himself.
 * His name, Heracles, comes from the Greek Hero Heracles, known as Hercules in Rome, or rather from the Hercules Beetle.