This is the page with the list of the Easter Eggs from Five Nights at Treasure Island.
In the remastered demo's game files, a file named "office_dog" exists of Pluto at the left entrance of the Office. It is unknown if he can appear in the remastered demo.
Photo-Negative Minnie Mouse
Photo-Negative Minnie is a normal Minnie Mouse suit, but has photo negative coloring. She also has black, hollow eyes and a huge pair of human-like teeth. It was confirmed by the game's creator, Matthew Phoenix Rodriguez that her starting location will be Character Prep 1.
Suicide Mouse is a gray-scale Mickey Mouse suit that starts in the Broadcasting Room. When he becomes active, the music from the Suicidemouse.avi mockup will play and the television in the Broadcasting Room turns on. It will remain on for the rest of the night.
When he enters a room, the area around him darkens and, sometimes, certain things will change around him such as the Character Prep 1 posters which will change to an image of his face.
Nightmare Suicide Mouse
Nightmare Suicide Mouse is an easter egg that will sometimes appear when you switch to the Staff Area in Remastered 3.0. He does not affect gameplay.
Outside of Five Nights at Treasure Island
On April 4, 2015, 00:00 (UTC), the Wiki went through an Easter update in which literal easter eggs were placed around the Wiki on random pages.