Board Thread:The Panopticon/@comment-26975268-20130407222910/@comment-7302713-20130412012811

There's been a lot of talk on this thread referring to Akhaten as Old God. I get where that comes from. When sitting in the stadium the Doctor says that they are singing to the Old God, sometimes called Grandfather. But when he finally realizes what's going on he says:

"I thought the Old God was Grandfather but it was just Grandfather's alarm clock"

Ergo, the Mummy is the Old God and Grandfather's alarm clock. The planet-like parasite is Grandfather.