Amorta

The Amorta were a single-celled telepathic creature from a pocket universe. It is unknown if they developed their own technology or traded with others but they had the means of teleporting, the capability of using holographic disguises and on one occasion the ability to send out a telepathic message over some distance in order to convince people they had toothache). Calcium was a precious element on their home world and at one point while disguised as a dentist they managed to acquire supplies of calcium through tooth extractions. (COMIC: Toothache!)