Melissa Crystal O'Neil (born July 12, 1988 in Calgary, Alberta, Canada) is a Canadian singer and stage and screen actress. Her father has Irish ancestry, and her mother is from Hong Kong originally.
As a singer she's known as the winner of the third season of Canadian Idol in 2005, and first female winner of the program.
As an actress she is known for her roles as Two on the Syfy series Dark Matter, which was her first TV role after having acted on Broadway (where she received a Dora Mavor Moore Award for her performance as Eponine in Les Misérables), and as Officer Lucy Chen on The Rookie.
- Dark Matter (2015 - 2017) as Two / Portia Lin / Rebecca
- Ransom (2017) as Drita Jakupi
- iZombie (2018) as Suki
- Condor (2018) as Janice
- A Simple Favor (2018) as Beth T.A.
- The Rookie (2018 - present) as Lucy Chen