Prototype is an antagonist in Fredbear and Friends: Left to Rot
Prototype is a unique endoskeleton with no suit. It has broad shoulders, stocky legs and three toes on each foot. Most notable are the large protruding eyes with no eyelids and large fins or ears on the sides of its head.
Prototype is only active during the main game in Observatory. Every 20-30 seconds or so it will spawn in the hallway on CAM 3, and the player will need to use the camera's flashlight to repel it by holding CTRL. If it is neglected it will enter the office and jumpscare the player, resulting in a game over. There is no way to prevent the jumpscare if Prototype leaves CAM 3 before the player can repel it.
Prototype is also one of the potentially active animatronics in Custom Room. It's AI can be set from 1 - 20, or it can be set to 0 to completely disable it. While active, Prototype will appear in the left hallway and is repelled by staring at it until it leaves. Failing to do this in time will result in a jumpscare. The number that it's AI is set to will determine how frequently it will appear in the left hallway and how long the player has to repel it before it attacks.
- Prototype's relation to Prototype from the original Fredbear's Fright is unknown.
- Prototype one of two animatronics in Custom Room to not have a corresponding human name, which indicates that it is not possessed by a spirit and is a normal animatronic endoskeleton. This is a trait shared with Suit.