Mummy

Mr. Mummy is a mummy and math teacher at Monster High. He has yet to appear in any fiction.

Personality
Mr. Mummy is passionate about math and works hard to bring about the same enthusiasm in his students.

Classic Monster
Mr. Mummy is one of the handful of characters based on the undead mummy monstertype that garnered popularity in the 19th and 20th century. Unlike the De Niles, he doesn't appear to be a reference to any famous Egyptian or mummy.

Trivia

 * Mr. Mummy is oddly white-looking for someone supposedly from Egypt.
 * "King Tut Teachers College B.A." references Tutankhamun, a pharoah who died young. He gained fame due to his tomb's discovery in 1922, which at the time was uniquely intact, and the supposed curse responsible for the deaths of some of the grave tresspassers.
 * "Alexandria Institute of Technology M.S., Euclidian Geometry" references the classical system of geometry compiled and completed by Euclid, an Alexandrian Greek.