Race: Human (magician).
Sacred Gear: Dimension Lost
Relatives: Johann Georg Faust (Ancestor)
Affiliations: Magician Council (Formerly) ; Khaos Brigade; Hero Faction.
Powers and Abilities: Master Magician: Georg is said to be a high-level Magician capable of a diverse array of spells including: Norse Magic; Demonic Spells; Fallen Angel Spells; Black Magic; White Magic; Fairy Magic; Dragon Gate magic circle.

Georg was a top-class Magician from the Magician association. He was later scouted by Cao Cao sometime before the storyline and left the association to join the Hero Faction.

Georg appears to be highly loyal to Cao Cao as he was following his orders and when he saved the latter following his defeat against Issei. Georg mentioned that his ancestor is so great it puts so much pressure on him.

It is shown that Georg can become concerned about the strength of his opponents just like he witnessed Heracles's defeat at the hands of Sairaorg, stating that the Gremory group was growing fast and irregularly. He was shown to be somewhat of a coward when he found out that neither his Sacred Gear or magic couldn't do something against Gasper's darkness and tried to escape as fast as possible.
He made his full appearance in Volume 9 alongside his Hero Faction comrades at Kyoto in an attempt to summon the Great Red.
He reappears in Volume 11, controlling Samael as he and Cao Cao attempt to steal Ophis' power.
He fought against Gasper Vladi in Volume 12 and lost after telling Gasper that Issei had "died", awakening a new power within Gasper. He was later seen carrying an injured Cao Cao and Leonardo taking them to Indra to ask for help but was sent to the Realm of the Dead by Indra along with Cao Cao and Leonardo after having their Longinus taken by the latter.
(Source: High School DxD Wikia)