Ebony Obsidian (born April 16, 1994) is an American actress. She is best known for her roles as Karen Mott in the television series Sistas (2019-present) and Lena Derriecott King in the film The Six Triple Eight (2024). Ebony Obsidian (born April 16, 1994) is an American actress. She is best known for her roles as Karen Mott in the television series Sistas (2019-present) and Lena Derriecott King in the film The Six Triple Eight (2024).