Sydney was born in Philadelphia, Pennsylvania to a Korean American father and African American mother.
While auditioning for America's Got Talent at the age of seven, she was seen by Disney executives and was asked to appear on its top rated sitcom That's So Raven. After this, she decided to study acting and then started to get more roles on several TV Series.
- Instant Mom
- One Crazy Cruise
- That's So Raven
- CSI: NY
- The Standoff
- Untitled Martin Lawrence Project
- Sons of Tucson
- Nicky, Ricky, Dicky, and Dawn
- Spirit Riding Free
- Santa Clarita Diet
- Pretty Little Liars: The Perfectionists
- Her parents, Kelly and John Park, portrayed an Oceanside resident and Savior defector in "Wrath".