Simon Wilcox is a Canadian-American singer-songwriter based in Los Angeles. She has helped write songs for the "Bubblebath" EP, "Poppy.Computer" and "Am I A Girl?". She is one of Poppy's closest friends.
Simon was born in Hamilton, Ontario and later moved to Ottawa, Ontario. She began songwriting and singing in the 1990s and released her own original songs. She began writing for others in the early 2000s.
She has written multiple platinum and gold singles, working with artists such as Nick Jonas, Enrique Iglesias, Tinashe, Demi Lovato, Five Seconds of Summer, Britney Spears, Fifth Harmony, Poppy and DNCE. Her songs have been used extensively in film and television.