Mekt Ranzz is Lightning Lord, a 30th Century villain and sometimes anti-hero. The elder brother of Legionnaires Lightning Lad and Light Lass, Mekt was not a twin like most people on Winath, which lead to jealousy and reclusiveness in later life. He had electrokinetic powers like his brother, after an accident involving the Lightning Beasts of Korbal.

Mekt is a frequent opponent of the Legion of Super-Heroes, and a founding member of the Legion of Super-Villains. Other versions portray a more sympathetic, anti-villain, and hint at an eventual reform.