- Of Ukrainian descent and spoke only that language until she was 8.
- Began martial-arts training at 7, was a black belt by 13, started her first school at 16 and had two more by 21. Is a third-degree black belt in Tae Kwon Do and a second-degree black belt in karate.
- Studied acting at New York City's William Esper Studio.
- Spent some time studying and living in a Buddhist temple outside of Seoul, but had to leave for a movie role.
- Was one of 12 finalists in Bravo's The It Factor (2002), which followed around aspiring performers for six months as they tried to break into show business.
- Is a licensed bodyguard and a licensed self-defense instructor who has taught actors martial arts on film sets.
- 2015, Critics' Choice Television Awards — Best Supporting Actress in a Drama Series: Nominee
- Roman Winnicki — Father
- Lesya Winnicki — Mother
- Attended York University, Toronto, Ontario, Canada
- Birth Name: Katerena Anna Vinitska
- Birth Place: Etobicoke, Ontario, Canada
- Profession: Actor
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