(Portrayed by Mary Chieffo)
A Klingon and the battle deck commander of T'Kuvma's Klingon Sarcophagus ship. Her father is of the House of T'Kuvma and her mother was from House of Mókai. L'Rell was fearless, resourceful, and skilled with both a mek'leth and with interrogation techniques, skills which are sometimes one and the same. She later became the High Chancellor of the Klingon Empire, and called herself its Mother, believing that to be the fiercest title of all.