Neptune Shoukaku is the leader of the 4th Division of the Harusame pirates, after the defeat of former captain Kujaku Hime Kada. He is the strongest and most athletic of the group.
he is a monkey
At the very core of his personality, he is a warrior. He greatly enjoys battle, as seen in his fight against Katsura, and he prefers fighting by himself. He also has honor, this is seen through the fact that he told his soldiers to stand down and admitted defeat after losing to Katsura. He doesn't care for rules or regulations, caring more for freedom.
Strength & Abililties 
- Immense Strength : Neptune Shoukaku shows Immense Physical Strength as seen in his fight against katsura . He is able to break buildings with his weapon .
- Skilled Spear User : He is able to use his spear skillfully as we see in his fight against katsura . He is able to destroy many structures using his spear but it was eventually broken by The Rampaging Noble.
Friends & Allies
- Neptune shares the same voice actor as Seki Ichinomiya from Arakawa Under the Bridge, Coyote Starrk from Bleach, Yukichi Fukuzawa from Bungou Stray Dogs, Kogorou Mouri from Detective Conan, Ronaldo Kuriki from Devil Survivor 2 The Animation, Fukurou from Fairy Tail and Yamato from Naruto Shippuuden.
- The appearance of himself and his weapon are based on Sun Wukong, the protagonist of the Chinese novel, Journey to the West, and his Ruyi Jingu Bang.
- Coincidentally, Shoukaku's Japanese voice actor, Rikiya Koyama, voiced the version of Sun Wukong from Koei's Warriors Orochi series.
|Fight||Outcome||Time it Occurred|
|Neptune Shoukaku vs. Katsura Kotarou||Loss||Episode 320|
- "A war isn't fought with your head. It's fought with your headbutts."
- (Telling his men to stand down) "No matter how many soldiers are left, if the general loses, the war is over."