The Traveler smiled, "Ohhh, now that's a good question and the main reason we are here and not somewhere else. You see dear Alexander here had a nasty run in with Weeping Angels. The Angels would have sent him to another time and fed off his energy but Alexander used his vortex manuiplator to try and get away. In the split second he did that the Angels tried to feed. The situation would normally call for him to be ripped apart and scattered across the time streams. Luckily for him the Vortex manipulator held him together. I suspect that he absorbed the time energy the angels were after and as a result wants more. It must tast really good."