Warning this info is years after the Light Novel ending..
True Red Dragon God Emperor True Dragon Dragon of Dragons (D×D) Dragon of Dreams
|Personal Status Alive|
Pythagoras –The Great Magic Dragon King (Brother)
[Gremory Clan ]
Archimedes Gremory (King)
|Ranking|| True Dragon
Great Red is a massive red Western Dragon with a horn on his snout and has two sets of wings. His overall length measures around 100 meters. He is the third-largest Dragon in the series, after Midgardsormr, and Apophis.
Not much can be deduced on Great Red's personality, but Issei compared his personality to that of a biker gang delinquent, claiming that Great Red travels around the Dimensional Gap doing crazy moves and gets aggravated at people that are staring at him.