Native to NYC, Onie's first role was portraying four year old Harlow Moon in WeCrashed, playing opposite to her on-screen parents, Anne Hathaway and Jared Leto. In 2023, Black Flies was released in-competition at Cannes, in which Onie played Sylvie, who was the daughter of Sean Penn and Katherine Waterston's characters. And, since, she has had enormously joyful acting experiences and hopes for more to come! Also, Onie has her own YouTube Channel called "Onie-ing It with Onie"- a fun art show with songs and special guests!
Onie Maceo Watlington is named after her great-grandmother (Onie Watlington) and funk and soul jazz saxophonist Maceo Parker (who happens to share a birthday with her, although her parents did not know that when they named her).