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Georg Ostburg (ゲオルグ・オストブルク) is an individual from the Fortress Series (Burg Folge) and served as a bodyguard for the Rosen. 
Georg is a genetically modified magician for the use of Convergent Systematic Reinforcement Magic as a member of the Burg Folge (Erste Art). 
When Lucas Rosen was fourteen years old he chose Georg as his bodyguard and let him flee to Japan during a terrorist attack in the United States. 
However, the German military officials judged that since all the other "First Types" had died prematurely due to Burg Forge, so they decided that there was no reason to pursue him.
- ↑ 1.0 1.1 1.2 SS, Temptation of Rose