Birthday Mickey is a fan made easter egg on Abandoned: Discovery Island.
He appears to be a normal Mickey Mouse suit, but he has a birthday hat on his hand and carries a birthday present around.
He only appears on a special night called, "Birthday Night" if it's somebody's birthday. To unlock the night, the player must go to the extras and check out the birth date when it's your birthday, you can activate that night in the extras. In this night, the whole building will be decorated with streamers and balloons. Nobody is active except for Birthday Mickey. He will start at Character Prep 1, when he is inside the office, the player must shut off a camera to avoid him, otherwise he will jumpscare the player. If they completed the night, a cutscene will show him giving them a birthday present and telling them, " Happy Birthday" and the night ends.
Birthday Mickey starts at Character Prep 1, and then he goes to Staff Area, Meat Freezer, Bathroom, Lounge, and then the office.
- He was created on Originator156's birthday.
- Himself and Birthday Night are both easter eggs.