Potini was a man of Māoridescent. He was known for his skills as a speed chess player. Together with two friends, he formed a chess club where underprivileged children found a home base – and learned to play chess in the process. The chess club was also involved with the Ngāti Porouheritage. Potini suffered from a bipolar disorder and was regularly admitted to hospital. Despite this he was able to stabilise his life and during his last decade make a strong contribution to his community. He died of a heart attack in 2011 and was buried at Taruheru Cemetery in Gisborne.