Noah

TANIWHA's lore : https://www.artstation.com/artwork/aoKReX
Noah is a young boy Tarakona saved from a mysterious sinking boat. His throat had been badly injured and he appears to be unable to speak. Additionally, he doesn't seem to understand Reo, probably being a stranger to Tawhito.
His disability and his trauma of narrowly escaping death have made him withdraw into himself. He refuses to evoke what happened before meeting Tarakona.