"Wet-Haired Caribou" is an infamous rookie pirate who was at the Sabaody Archipelago around the time of the Straw Hat Pirates' reunion. He has earned a bounty of Beli.png210,000,000, making him part of the new generation of rookie pirates with bounties over Beli.png100,000,000. He is the big brother of "Blood Splatterer" Coribou, another infamous rookie, and the two of them are co-captains of the Caribou Pirates. Both brothers gained their reputations for killing Marines. As both of them have bounties over Beli.png70,000,000, they both fulfilled the requirement of the Fake Straw Hat Crew, but they left upon discovering the crew's fraudulence. He is a minor antagonist during the Fish-Man Island Saga, and the central character of the Caribou's Kehihihihi in the New World cover story. Later, he became an ally of Luffy during the Wano Country Arc. Caribou is a tall man with dark skin and dark hair reaching down to his shoulders, a distinctive wet-looking tuft giving him his epithet, and a beard in the shape of a whirl going upwards on his chin. He has intimidating eyes with many circles around the pupils (with dark and medium green central heterochromia in the anime), pointed ears, and long limbs. He has a long tongue which is often seen sticking out. He wears a coat which appears to be made of fur, dark on the outside and lighter and spotted on the inside (similar to a leopard's), draped over his shoulders like a cape, dark pants and shoes, and an extremely long-sleeved shirt (which at Sabaody was covered in blood) with a Cross fleury-like design on the chest. With the way he wears his shirt, concealing his arms under his long sleeves, it resembles an unbuckled straitjacket. After being found and looked after by an old woman on a winter island in the New World, Caribou is seen wearing a coat, which has a darker color than his previous one and a fluffy collar, draped onto his shoulders. He is also wearing plaid pajamas and thick winter boots. He soon went back to wearing his old long sleeved attire, but now wears a revolutionary uniform jacket draped over his shoulders, along with a beret with a star on it.
After becoming a prisoner in Wano Country, Caribou kept his long sleeve shirt, but acquired standard prisoner striped pants and tattered trousers, as well as handcuffs and sandals. Caribou is an insanely violent man who is well-known for killing people, most prominently Marines, by burying them alive. Caribou believes in God, and frequently justifies his murders by claiming to do it for the sake of his god. He will also ask his god to forgive enemies that work against him, showing a very egotistical personality. Caribou seeks the fame of killing important people, and is constantly plotting ways to target his next victim; he joined what was seemingly the Straw Hat Pirates in order to kill their members from within, and sought to attack the real Straw Hats as soon as they appeared. He is extremely prideful, as he decided to shoot a Marine rather than use him as a shield like the Fake Straw Hat Crew commanded because the Marine had lied to him. He also seems to be overconfident in his Logia Devil Fruit power, as he dismissed Pekoms' Zoan ability and attacked him with no caution, causing Pekoms to defeat him with one blow. Caribou is very greedy and loves to get money and treasure by any means necessary. He has no problem with selling captives on the slave market, and upon reaching Fish-Man Island he immediately took the opportunity to kidnap as many mermaids as possible to sell them, only releasing them once he managed to steal the Ryugu Palace's entire treasury. When he saw Pekoms and Tamago walking away with his stolen treasure, Caribou immediately became angry and rushed to attack them, causing him to be quickly defeated. Caribou is also rather lecherous, as he immediately started ogling Nami upon seeing her, contemplated hiding in the women's quarters on the Thousand Sunny, and took great pleasure when talking to the group of mermaids he captured. He likes to use his Devil Fruit abilities to move around in disguise and listen in on conversations that reveal things he can take advantage of. Caribou prioritizes his own safety at all times and will almost always attempt to escape whenever he encounters a situation that he recognizes is too dangerous for him. He will even abandon his comrades to get to safety, as shown when he left his crew behind to fight the Marines at the G-5 base. When he is surrounded by enemies with no way of escape, Caribou will try to stay alive by pledging to serve them, although people typically know his oaths of fealty are lies. Caribou will use other people around him to his advantage whenever possible, as he tried teaming up with Monkey D. Luffy in the Prisoner Mine to work toward escaping and get more meal tickets. However, he was much less willing to help Luffy in his quest to take down Emperor Kaido himself, and when he and the Straw Hats encountered a kraken on the way to Fish-Man Island, he begged for them to flee from it. When his pleading was unsuccessful, he gave the Straw Hats the idea to send fighters out in bubbles to keep the kraken from attacking their ship and dooming him. During his cover story, however, Caribou appeared to grow more conscientious of others. When a granny nursed him back to health, he was initially willing to let her be beaten by Scotch, but he had a change of heart and returned to the island with his crew to save her and the factory workers; this culminated in him protecting the granny from X Drake at all costs. Like many other characters, he has a distinct laughter style, starting with "Kehihihi".
Caribou values his co-captain and brother Coribou and the rest of his crew, but mainly due to their unwavering loyalty to him and willingness to aid him in combat. He counted on them to rescue him from the Straw Hats' captivity and was devastated when they were attacked by the kraken, and was elated to see them work to rescue him from Jinbe and the G-5 Marines. However, he was very quick to abandon his crew at the G-5 base in order to make his escape. While at the Sabaody Archipelago, he berated Coribou for looking in the wrong direction when talking to him and insulted him, with Coribou repeatedly apologizing to him in response. Caribou was initially fearful upon reuniting with his crew, but in spite of his betrayal, Coribou and the crew were still very loyal to him, as Coribou had no intention of ever fighting with his brother to honor the wishes of their grandmother. The Caribou Pirates immediately worked with Caribou to free the residents of a nearby village. Notably, they made no effort to save their captain after he was defeated and captured by X Drake, although they wept and saluted him as he was dragged away. Caribou is well-known for killing Marines during his pirating voyage. When he found a Marine soldier at Sabaody, Caribou attacked him and tried to have him buried alive, calling him a sinner in his prayer to God. Upon finding out that the Marine had lied to him about not calling reinforcements, Caribou took this very personally and shot him, despite having received orders to use him as a human shield. The Marines hate Caribou, having assigned him a very large bounty for his actions. When he was dropped off at the G-5 base, the Marines there quickly raced to execute him tortuously by burning him at the stake. Caribou and Coribou joined the Fake Straw Hat Crew under the impression that they were the real Straw Hats, intending to kill them from within for fame. Demaro Black, who was posing as Luffy, was glad to have the two infamous brothers join his forces. Later, Black ordered Caribou to lead the charge against the Marine forces by using one of their men as a shield, Caribou flouted his orders and shot the Marine to satisfy his pride. Caribou was not seen fighting the Marines with the rest of the crew, and after the Straw Hat actors were exposed as fakes, Caribou rounded them up and had them buried alive. He degraded them and called them fools, and they pleaded for him to spare their lives, but Caribou had no mercy and did what he had planned to do. Upon reaching Fish-Man Island, Caribou sought to kidnap mermaids to sell them as slaves, and he also stole the royal family's entire treasury. No bystanders witnessed these actions, so they were unaware of Caribou's existence and initially blamed his actions on the Straw Hats. Caribou sought to kidnap the mermaid princess Shirahoshi to sell her for the highest price of all, but was stopped by Luffy. After having his treasure taken away and unsuccessfully trying to get it back, Caribou immediately resumed kidnapping mermaids, but this time was spotted and stopped by Jinbe. Jinbe immediately took Caribou to turn him in to the Marines, resulting in much fanfare from the residents when the pirate was taken away.
