Management has also been made aware that the Spring Bonnie animatronic has been noticeably moved. We would like to remind employees that this costume is not safe to wear under any circumstances.” — Phone Guy, Five Nights at Freddy's 3

Spring Bonnie, occasionally spelled Springbonnie, was the earliest iteration of Bonnieand was an entertainer in Fredbear's Family Diner, along with the diner's mascot Fredbear. They made their debut in Five Nights at Freddy's 3.

Spring Bonnie is most notable for being one of the few mascots to have animatronic suit hybrids, known as Springlock suits - as well as the main persona William Afton used for luring children during his killing sprees. A Spring Bonnie suit was also sealed in the safe room within Freddy Fazbear's Pizza^[1] after the incident of springlock failures from the "sister location".^[2] It was used one final time when Afton used to suit to hide from his past victims, however the faulty mechanisms malfunctioned, causing the compressed endoskeleton to impale and kill Afton from within. Though deceased, Afton would return decades years later, his spirit merged with the Spring Bonnie animatronic to become Springtrap. Spring Bonnie was a yellow rabbit animatronic bearing an appearance similar to Bonnie. They wore a purple bowtie and two black buttons, although they are occasionally depicted wearing no bowtie at all. In Five Nights at Freddy's: The Ultimate Guide, Spring Bonnie's model is shown to have main dark golden color with lighter butter yellow shades for the ear insides, muzzles, and stomach, and has a yellow eye color.