Drago is one of Aeryn's main Pokémon whom Aeryn caught prior to her journey. He currently resides at her uncle's lab in Luminos City while she travels in Hoenn.
Drago is very protective of Aeryn after an incident that left her in the hospital for a while. He is very wary of males that come near her. Drago is also protective of all of Aeryn's Pokémon.
As a Noivern, Drago is quick and powerful, he is an adept flier and specializes with ranged and close up attacks.
Aeryn and Drago initially met when Drago was just a baby Noibat. Alone and nowhere to go, Drago wandered outside the Terminus Cave for weeks before being found by a young Aeryn who was traveling with her mother. Arianna then caught Drago for Aeryn and gave her to raise.
Sometime after evolving into a Noivern, something happened to Aeryn that made her go into the hospital. Since that day, Drago has been very protective of Aeryn becoming wary of males that come near her.