Overlord Lightning is the future version of The Lightning from a different universe where he has won. 

Overlord Lightning
Overlord Lightning
Vital statistics
Aliases The Lightning
Birthplace Eridu, Earth
Date of Birth December 25, 5000 B.C.
Age 5,000
Family The Lightning (weaker past counterpart)
Affiliations Unknown
Alignment Unknown
Species Demon
Occupation Unknown
Rank Unknown
Abilities Unknown
Power Level Unknown
Weapons Unknown
Unique Trait Unknown
Goal Unknown
First Appearance Unknown
Voice Actor David Warner (FUNimation Dub & Saban Dub)
Seiyū Norio Wakamoto