thames lines for this bratty kumioh? vampires he's ran into while feeding. an employer to put up with his attitude. other ancients he would have known throughout time. a witch that could have unknowingly had him as a familiar for a time. other shapeshifters or weres he could have met in travel; maybe some thinking a fox would be an easy target. those he's given an ability or knowledge of something to. someone he trusts. all the lines you can throw at him.