Ayan is a tsukumogami permanently affixed to a pedestal. As such he cannot move under his own power. He was sent to Sora in episode 10 of the anime.
Sora placed him on a dolly with a rope attached to it so Pochi could pull him around the house.
Biography
Originally he lived in a gift shop in Egypt, appearing to be a regular statue of Anubis, Egyptian god of the dead. During his travels, Mokuren decided to purchase Ayan and send him to Japan as a gift to Sora, wanting to give his son something that would "speak to his inner child" after his previous gifts had scared Sora.