He then returns to the Dimension Gap while saying "Zoom Zoom Iyaaan" (from Oppai Dragon's theme song) repeatedly to Issei and Ddraig, much to their dismay. He returns to the Dimensional Gap after Issei uses the Longinus Smasher to demolish the Jabberwocky in one shot. He also lends Issei his power during his fight against the Jabberwocky, fusing with Issei to create a gigantic version of the Scale Mail to battle the Jabberwocky, claiming that the Beast (referring to Jabberwocky) is staring at him.
In Volume 12, Great Red saves both Ophis and Issei from the crumbling dimension and restores Issei's body with his flesh. Great Red made his first appearance in Volume 6, while traveling through the Dimensional Gap. Some time before the series, he was challenged by Tannin (a former Dragon King) to a fight but he ignored him. Not much is known about Great Red's past except for the fact that he has occupied the Dimensional Gap for quite some time, apparently taking residence after Ophis left. 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. He is the third-largest Dragon in the series, after Midgardsormr, and Apophis.
His overall length measures around 100 meters.
Great Red is a massive red Western Dragon with a horn on his snout and has two sets of wings.