Kalgara

Calgara (カルガラ Karugara) was a hero of the Shandians who lived while Upper Yard was still a part of Jaya (some 400 years ago), and who befriended the explorer Montblanc Norland (the ancestor of Montblanc Cricket). A statue of him was erected after his death as an eternal reminder to the Shandians of his strength and courage, and Wiper is a direct descendant of his.

Originally, Shandians were a viciously xenophobic tribe, and tried to kill Norland's crew immediately, especially after Norland killed a giant snake that the Shandians considered their god (Norland killed it to save the life of a sacrifial offering to the snake, who happened to be Calgara's daughter). However, Norland gained their trust and Calgara's friendship by curing a disease that was plagueing their tribe. Their friendship went as far as Calgara showing Norland the fabled city of gold, and sharing the wealth fully.

However, some tensions ran between the two when Norland cut down an entire forest, whose trees the Shandians believed to hold the souls of their ancestors. Norland did so because the trees were the source of the disease that plagued the Shandians in the first place, and decided to leave anyway, as he and his crew were once again seen as outsiders. However, Calgara realized the truth too late, as Norland's crew was already on their boat, and leaving.

This didn't stop Calgara though, and he rang the golden bell that first attracted Norland to Jaya, promising that he would wait for Norland's return. Sadly that was not to be as one fateful day, the part of the island they were on was shot into the air by the Knock Up Stream and into Skypiea where it attracted the attention of the "god" of that timeline who then proceeded to attack it and the Shandians to claim it as his own.

Though it's never revealed how Calgara met his end, the last seen of him was shouting to his warriors that they must protect the land so their friend Norland can return.