There’s quite a few people attempting to explain exactly what happened to Hodor in Season 6 Episode 5 which explains the origins of Hodor. Some theories are far too complicated in terms of explaining the space-time continuum paradox that any series dealing with time travel undergoes. But I feel that the idea of Hodor’s essence is quite simple and doesn’t need a great deal of exaggeration to make sense of it all.
This episode will be one of the harder ones to write about as quite a bit was emotional. The title The Door is pretty appropriate but that part will be revealed later.