In the spirit of fun, consider that in some stories that Merlin was half a demon. So maybe Malcolm was the scion of a Fallen Angel and a human. So Harry has hellfire powered termites in his woodpile trying to get out. So Rudolph's crap is just crap and Harry's anger issues are because one grandpa was a baaaaad boy. Which feeds my weird notion that Harry is Merlin Ver 1. Who, due to time travel shenanigans is in the stasis chamber learning patience. And where at the appropriate time he will appear older and wiser and send himself back to fulfill a prophecy which has yet to be revealed, since I am making this up.