Sanctus Mickey is a fan made antagonist in Abandoned:Discovery Island.
To activate the easter egg,press the Cactus Kid poster on the office,then in aprox. 3 seconds you must shut off the power,when the power comes back on.
Sanctus Mickey will appear on the roof and then start to move.
After being on the Roof for a while,he will instantly teleport to the office.
Hiding under the desk will make him leave.