|Physical appearance||Small, hard-working, dark-skinned.|
|Residence||Formerly the Overshaul Islands, now the Nation.|
|Relatives||Milo, his brother, Cahle, his sister-in-law, and Guiding Star (not Twinkle), his nephew.|
A character who appears in Nation. Pilu-si, or Pilu as he is more often known as, is the brother of Milo, and is around sixteen. He is quite small, and has a habit of rushing around, and exhibiting that slightly nervous, apologetic smile that is so common. He is a natural optimist- like a coconut on an ocean, he floats through life, bobbing his way along merrily regardless of situation. Sadness soon passes; sorrow or grief are simply covered up and ignored. If someone put a dog's brain in a human body, the product would be Pilu. He often acts a spokesman for Milo.
Once, he and Milo were taken on board a British ship (called the John Dee) headed to Port Mercia- the occupants of which taught him English, and gave them various jobs, such as setting the ropes on board. As a parting gift, the 'trousermen' left them various needles and knives, and a small cooking pot. He is therefore looked at by the others as something of an expert in the strange ways of trousermen, although often his knowledge is quite mangled- he tells strange tales of men who throw rocks at coconuts because they are shy.
Before the Wave, he lived on the Overshaul Islands, and it was when he was taking Cahle, his sister-in-law, to the local Women's Place for the birthing ceremony that the wave drifted him to the Nation. He used his gift of speaking to help Mau, by talking about the incident with the shark and being prosecutor in the court case that occurs. In fact, Daphne compares him with Shakespeare (if Shakespeare had been small, dark, and wore a loincloth) and the preacher, Mr Griffith, who talks so eloquently that the church organ started up by itself. He was quick to take the name of ‘Uncle Pilu’- after the wave, there were not many parents, but lots of uncles and aunts. Pilu was the first one of the Nation to learn how to read and write, and became quite learned- possibly because the Royal Society sent a teacher on the first boat.