Digs the Weasel is a prototype animatronic originally intended for a specialized stage (Similar to Pirate's Cove) in the pizzeria. Unfortunately, the limited budget led to Digs being stowed away in the pizzeria's basement. Out of sight, out of mind...
Before Fredbear's Family Diner, a group of technicians used their knowledge to create Digs, one of the most advanced animatronics at the time. After Digs was created, his parts were used to make a mechanical Fredbear and Spring Bonnie. Just because something is mechanical doesn't mean it doesn't have any feelings. Years later, Digs was planned to be reused at the 1993 Freddy Fazbear's Pizza. However, due to budget cuts, Digs was unable to be used and was stowed away in the basement.
Later, after yet another murder took place, the animatronics had found the dead body of a child. Bonnie suggested to stuff the child into Dig's suit. Freddy refuses, but after Chica and Foxy discuss why they should stuff him, Freddy agrees. After stuffing him, Freddy, Foxy and Bonnie discuss what would happen to Digs after he awakens. Immediately after Freddy states that he "could wake up any second", [MORE COMING SOON]