The Doctor is the chosen name of this Lightning Empire Ranger. He originally was the companion of a soldier in the Roman legion under which he served as well. His owner died after a Barbarian Tribe attacked their encampment at night. The Doctor escaped the attack and found himself in the paws of the Lightning Empire who took him in and welcomed the former soldier into their ranks as a Ranger. He's the son of Kaedro and Lillia.

The Doctor is a Leopard/Snow Leopard Hybrid with the Flavism and Dilute Mutation giving him his distinctive light golden pelt.