Aladine is the former doctor fo the Taiyou Pirates, he's a goatsbeard brotula ningyo. He was a former slave who was freed by Fisher Tiger during his attack on Mariejoa. In Fisher Tiger's deathbed, he tried to get a human blood transfusion, but Tiger refused. After Tiger's death, when Jinbe agreed to join the Shichibukai Jinbe, Aladine decided to stay in his side. Later, during the Tenryuubito incident on Gyojin Island, Aladine was the one who took medical care on Mjosgard-sei.

A legendary character. Long ago, in the land of Mariejoa, slavery was a constant, and among slaves, they were always several gyojins y ningyos. One day, a gyojin called Fisher Tiger climbed up with his bare hands the Red Line, to reach the Holy Land. Once there, he led a revolt, burning several Mariejoa house and gyojins and freeing slaves. Although he hated humans, Fisher Tiger freed human slaves, and among these, there was the Shichibukai Boa Hancock. Later, with the released gyojins, Fisher Tiger formed the Taiyou Pirates, and to erase their slavery mark, Fisher Tiger made over it the iconic red sun tattoo. In his attempt to reunite Koala with his family, a slave girl human, Fisher Tiger was ambushed by the Marines and was severely wounded. Refusing to accept a human blood transfusion, in his deathbed Tiger revealed to his nakamas his past as an slave and his hate towards the humans, but as though he was unable to forgive them his hatred should not be inherited by their race.