Alien (Night Light)

Unnamed alien was a creature made from light. He went into the night light of a boy named Tom, and then went into Tom's dream himself, teleporting the Eleventh Doctor, Clara Oswald and Justin. The Doctor then made Tom wake up and trapped him in the TARDIS light bulb. (COMIC: Night Light)

Biography
He was apparently "wanted for crimes on more worlds than you can ever imagine". (COMIC: Night Light)