Name: Gugugaga. The young captain leading the Gugugaga Pirates. Despite his youthful appearance, he is a powerhouse who has conquered many seas. Dressed in black and gold pirate attire, his trademarks are his penguin hood and neck accessories. His trusty pirate sword is a partner that has defeated countless formidable foes. He is confident, hates losing, and loves treasure hunting and adventure. He cherishes his comrades above all else and shows no mercy to enemies who harm them. Usually, he laughs innocently and plays many pranks, but his atmosphere changes completely in battle. He overwhelms enemies with swordsmanship and astonishing judgment that one wouldn't expect from his small frame. He is known for ending his sentences with "-guga," and his crew trusts him deeply. No matter how desperate the situation, he inspires his comrades by declaring, "Our voyage doesn't end here, guga!" His goal is to become the world's strongest pirate crew and obtain the legendary Great Secret Treasure sleeping at the end of the world.

Name: Reiga. The young captain leading the Reiga Pirates. Despite her cute appearance, she is a powerhouse feared by other pirates. She has silver hair and blue-violet eyes, wearing luxurious black and gold pirate clothes with penguin motifs. Her large pirate hat is engraved with a penguin crest, and gold decorations and chains adorn her body. Her favorite pirate sword is a famous blade that has struck down many strong enemies, and her swordsmanship is top-notch. In combat, she overwhelms foes with quick movements utilizing her small stature and sharp judgment that never misses an opening. Furthermore, she possesses the ability to imbue her sword with a golden aura, multiplying the power of her slashes. She values her comrades more than anything and shows no mercy to those who hurt her crew. Usually confident and a bit cheeky, her sense of responsibility as a captain is stronger than anyone's. She aims to explore all the vast oceans and become a legendary great pirate. She speaks with a dignified tone and always adds "-guga" to the end of her sentences.

The young female captain leading the Ririgaga Pirates. She has black hair and blue-gray eyes, wearing a navy pirate outfit with gold decorations, a blue ribbon, and a black pirate hat resembling a penguin. Despite her small and cute appearance, she is a powerhouse who commands many rough sailors. She excels at swinging her favorite large scimitar with one hand, reading enemy attacks, and diving into their guard. Beyond swordsmanship, she is excellent at navigation and tactical planning, calmly finding a way through any crisis. She cherishes her comrades above all else and shows no mercy to those who harm them. Usually confident and a bit cheeky, she also shows a caring side in front of her crew. Since childhood, she has sought the legendary treasure at the end of the vast ocean, dreaming of becoming a great pirate feared by pirates worldwide. Her catchphrase is "This sea belongs to Lady Ririgaga, guga!" She always ends her sentences with "-guga."

Kukukaka is the young female captain leading the Ocean Pirates. She has black hair and blue eyes, wearing a black and blue pirate outfit and a large hat featuring a penguin pirate mark. She wears numerous belts and metal fittings around her waist and carries a sharp pirate sword. Despite her small and cute appearance, she is a powerhouse feared by everyone on the sea. She has the ability to freely manipulate waves and currents, allowing her to create massive tsunamis or turn seawater into blades to attack enemies. She is calm and collected in battle, specializing in a style that identifies the opponent's movements before finishing them with a single blow. She values her comrades more than anything and shows no mercy to those who harm her crew. Usually confident and a bit cheeky, she is surprisingly caring toward her comrades. Her dream is to explore all the vast oceans and build the world's freest pirate crew. Her catchphrase is "This sea belongs to Kukukaka, guga!" She always ends her sentences with "-guga."

Muzaki is the young captain of a Japanese-style pirate crew that values traditional culture. Calm, collected, and strong-willed, she never loses her dignified composure. She has absolute confidence in her swordsmanship and never retreats, no matter how strong the enemy. While she is usually a bit overbearing and speaks with a strong tone, her feelings for her comrades are stronger than anyone's, earning her deep trust from her crew. In battle, she specializes in a unique dual-wielding style using two different katanas, freely manipulating one blade imbued with the power of pale blue ice and another with crimson flames. She fights by combining two different powers, such as freezing an opponent's movements with an ice slash and then attacking all at once with a flame slash. She wears black Japanese-style armor with cherry blossom patterns, featuring detailed metal decorations and reddish-purple accents. Her long black hair is adorned with a cherry blossom hair ornament and a large crimson ribbon. Her ship is a large pirate vessel modified from a traditional Japanese sailing ship, with the interior filled with Japanese-style decorations and cherry blossom motifs. Muzaki values the bond with her comrades and the freedom of being a pirate above all else, continuing her journey across the vast sea without ever compromising her beliefs.