Scott Cawthon is the developer of the Five Nights at Freddy's franchise, including Five Nights at Freddy's, 2, 3, 4, Sister Location, Freddy Fazbear's Pizzeria Simulator, and Ultimate Custom Night. He is also part of Hope Animation, which is a "project of Christian animators" aiming to spread the teachings of Jesus Christ. He has also developed a few other indie games, although most of these can no longer be found on his website. He currently resides in Texas, USA with his family.
When Chipper & Sons Lumber Co. (another game made by scott cawthon) came out, a lot of people complained that the animation and characters in it looked like "animatronic dolls." This sent Scott into a deep depression. However, before he was ready to quit the video game making business entirely, he realized he could take advantage of this and make it into a game, and thus Five Nights at Freddy's was born.
Scott's avatar comes from another game he made - There is no Pause Button!
According to Scott Cawthon, Bonnie is one of the two scariest animatronics of the series, as he has had several nightmares about Bonnie while developing the game.He also recently said on his Steam post that Bonnie from this game gave him nightmares. Scott said that one night he dreamt that Bonnie was in the hall outside of his bedroom, causing Scott to jump out from his bed and rushed to hold the door shut. After finding that the door was locked, he believed that Bonnie was about to attack (as the doors do not work when he and Chica are in the Office). Afterwards, he woke up from the dream.
The original Bonnie gave me nightmares. That was the only one out of the whole series. - Scott Cawthon,