Miyota

Miyota was a giant blue winged creature that for some time sat within a network of pipes that he used to bring creatures from other dimensions to him that were then held imprisoned in glass pods until he was ready to feast.

When he was knocked out by the arrival of the Eleventh Doctor, Amy Pond and Pietro Rossi when they fell from one of the chutes above his head, he awoke to find that he himself had been transported — but to some quiet backwater world. (COMIC: Dungeon of the Lost)