Onaha is a character from the live-action Thunderbirds movie, released in 2004. She is the wife of Kyrano and Tin-Tin's mother. She hangs around on Tracy Island, ensuring the family of heroes maintain a healthy, well-rounded diet.
Onaha is meant to be a replacement for Grandma Tracy, who didn't appear in the film for some reason.
She was portrayed by Harvey Virdi.