He is kind and battle-hardened and in the first flashback courtesy of the Portrait Fragments, it is revealed he was part of the rebel forces that fought against the British in the past. Despite his superhuman qualities, Adrian is a pacifist, choosing not to suck a victim dry and kill him/her whenever he thirsts for blood. He dislikes murder, at first opting to quench his bloodthirst by drinking water rather than kill the nearest human despite Gaius's persuasion; he even feels remorse over the one victim he killed centuries ago. As such, he would suck blood only from victims who have given their express assent to the act. Even then, after feeding, he would heal his victim's bite wound.
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