Born in South Africa, Cassie later emigrated to New Zealand, where she established her career in the entertainment industry. Her portrayal of the strong-willed and complex character Ebony in The Tribe made her a prominent figure in young adult television of the early 2000s and earned her a significant international fanbase. Beyond The Tribe, she has appeared in various other television productions and films, demonstrating her versatility as an actress.
In addition to her acting work, Meryl Cassie has pursued a career in music. She is a member of the musical group "The Cassie Sisters" alongside her sisters Megan and Monique. The group has released music and performed, showcasing their vocal talents. Cassie's contributions to both the acting and music industries have established her as a notable personality in New Zealand and a memorable figure from popular culture.