Mr. Mueller

Mr. Mueller is a Hidden Side ghost first introduced on July 29, 2019. He appears exclusively in the Hidden Side App.
==Appearance==
Mr. Mueller is a yellow ghost with large glasses and a graduation cap. He wears a yellow jacket over a tattered blue shirt, and has a large, brown bow tie.
==Biography==
===Hidden Side App===
Always perfect with numbers and order, Mr. Mueller never let anything slide. Keep your numbers neat!
==Abilities==
===Random Blink (App only)===
In the Hidden side app, upon using Mr. Mueller’s special ability, he will teleport to a random location.
===Gloom===
Like all ghosts, Mr. Mueller has the ability to gloom people and objects, either to harm them or possess them.
===Possession===
Like all ghosts, Mr. Mueller can take control of people and objects, turning humans into gloombies when he does so.
==Appearances==
*Lego Hidden Side App