Ddraig

Ddraig  Also known as Welsh Dragon, The Red Dragon Emperor One of the Two Heavenly considered a hatred being for its great power by the three factions(Angel, Fallen Angel, Devil) that has a power to kill both God and Satan. He respect Issei for being the only one who think of him as another being unlike the past posessor who treats him as a tool. He resides in the Boosted Gear and is able to talk telephatically with Issei.

Ddraig  In the past, Ddraig fought against it's arch-rival the Vanishing Dragon, Albion, in middle of the war of the three factions of Bible System which was interfered by the Angel,Devils and Fallen Angel for interfering in against their war, in anger, both dragons attack both side which lead to their bodies being destroy and their soul moved to two separate Sacred Gears, with Ddraig moved to the Crimson Dragon Emperor's Gauntlet.

Ddraig has been brought to tears on many occasions do to issei's lecherous ways and people calling the two of them Oppai dragon to a point that Ddraig is now in a state of constant depression. Despite so, he still considers Issei the best Crimson Emperor Dragon.