A legendary Klingon tyrant of some fifteen centuries ago whose defeat in single combat by Kahless the Unforgettable, wielding the first bat'leth, marks the founding moment of the Klingon Empire.
Molor is the great villain of Klingon legend, a tyrant who ruled the homeworld around 1,500 years before the 24th century. According to the story the cloned Kahless retells in the Next Generation episode Rightful Heir, Kahless dipped a lock of his hair in the lava of the Kri'stak volcano, cooled it in the lake of Lusor and twisted it into the first bat'leth, the sword with which he killed Molor.
The victory is re-enacted every year at the Kot'baval festival, which Worf and Alexander attend on Maranga IV in Firstborn, with a singer playing the tyrant. The Deep Space Nine episode The Sword of Kahless concerns the recovery of the very blade used against him.
In Discovery's Will You Take My Hand? the Orion outpost on Qo'noS is said to stand over an old shrine to Molor.