In the 23rd century, the House of Mo'Kai was infamous for being composed of "watchers," "deceivers," and "weavers of lies" – employing tactics of espionage and subterfuge that other Great Houses considered dishonorable compared to a frontal assault. (DIS: "The Butcher's Knife Cares Not for the Lamb's Cry") L'Rell's mother was born to the House of Mo'Kai while her father was of the House of T'Kuvma. She considered herself to be part of both Houses. (DIS: "The Butcher's Knife Cares Not for the Lamb's Cry")