Bonnie the bunny had been very, very naughty. He broke the rules. He was a bad rabbit. He was ashamed. He wasn't supposed to do what he had done. If anyone found out he'd be in big trouble.

The hulking, purple animatronic rabbit was 8 feet tall and imposing enough in the doorway without the oily, black, bad-smelling substance leaking down its face from the eye holes of its mask. It twitched and jerked, routines out of sync; random static could be heard over the sound of metallic whirring. Something was very wrong with the robot.

"B-B-Bonnie's your friend!" a jarringly chipper voice that had been upwardly pitch-shifted crackled from some hidden speaker within Bonnie's juddering, gaping jaw, skipping and stammering with continual electronic glitches. "Please don't tell F-F-Freddy. I-I-I-I did not me-m-m-mean to… jstfapelrthikghlle," the electronic voice dissolved into incomprehensibly warbling, tinny gibberish like a tape recorder rewinding. Bonnie's robotic, magenta-colored eyes spun wildly in their sockets and his body shook, the soft plastic and faux-furred outer shell rattled around the inner robotics. His foam-covered mechanical fingers convulsed and splayed at random, making him drop his prop rock-and-roll guitar on the dirty, black and white checker tiled floor.

"Hepghsryndappquosznmmmy name is B-B-Bonnie! I'm a bunny that loves to play my guitar!" The return to normal speech was abrupt and disconcerting. "W-welcome to Freddy Fazbear's Pizza P-p-p-pal-l-l-lace," the rabbit kept glitching through the standard greeting dialogue, his robotic movement jerking with each stammer. "Welcome- wel-wel-welcome! This is Freddy- Freddy- Fred-d-d-dy…" he started again and got stuck again.

The Pizzeria was closed; it was late at night. Freddy Fazbear's Pizza Palace was a branch of the famous franchise just like any other. It had an animatronic band of animal characters, fresh pizza served daily, and an arcade to rival any amusement park. It also had secrets.

Fazbear Entertainment was plagued by scandal, but somehow always managed to pull through and erect new restaurants and business ventures. Money poured in from somewhere, and it never seemed to end. For the robots, the pizzerias were paradise, they got to sing together and play with the children and see their smiles. There was very little they were programmed to enjoy more than getting children to smile, and they were very adept at it. It was perfectly pleasant, so long as they followed the rules.

Bonnie broke the rules, Bonnie went exploring where the robotic performers were not allowed, and he saw… something. He saw something bad. His Artificial Intelligence was not programmed or prepared to process such images and information as he had seen, and was still seeing right now. The AI went into shock and tried to repress it all. The sight of Bonnie overloading and sparking and spasming was frightening to behold, but it was nothing to what the robot artificially "felt" inside.

He was resetting again and again in some hope that it would get rid of the traumatic sight. This was rather like playing peekaboo to get rid of something scary though; the vision wasn't going away and was newly traumatizing each time Bonnie laid eyes on it. The children were all slumped on the floor of the back room, mouths open, eyes staring unseeingly, still wearing stripy party hats. Blood was dripping from their corpses, pooling.

"L-l-look lively kids… p-p-please?" the rabbit pleaded, an oddly sentient moment from Bonnie's AI. Bonnie loved performing for children, getting them to hop along to The Bonnie Boogie, his solo song. These kids weren't moving though, they were not going to dance along to his songs. They weren't going to smile ever again. These kids were dead. Murdered. His head tilted suddenly to one side with a crick as the servos crunched in his endoskeleton, it looked distressingly like he had just broken his own neck. Then his slightly sped up voice spoke again.

"Hi-kiddos-what're-your-names? I'm Bonnie the b-b-b-b-buh-buh-b-buuuuu…" Bonnie wound down, his dialogue pitching downwards and slowing as it trailing off into silence. His body and long rabbit ears drooped forward as he seemingly lost power. Bonnie had gone into idle mode and retreated into his electronic consciousness and was "thinking" very hard now.

Fazbear Entertainment electronics were quite advanced; the suits liked to boast that they were almost as smart as actual human entertainers. This was almost true too, however the way they "thought" was guided and fenced in by protocols and programming; Bonnie was having to navigate a maze of logic gates to make sense of his situation.

No one got hurt at Freddy's… no. No one was supposed to get hurt at Freddy's. Freddy's was safe. No. Freddy's was supposed to be safe. Kids were supposed to be having fun here. That was how it was supposed to be. Things were not supposed to be this way. Wrong. Things were wrong. Someone broke the rules. Someone besides Bonnie. They broke the rules first. They hurt the children. They killed them. They were bad.

Bonnie's body fired up again, servos whirring once more; his jointed purple ears twitched. Something new was in his magenta eyes; a tiny pinprick of righteous red fury had emerged from the depths of simple black iris. He approached the corpses, taking care not to step in the blood. The robotic memory banks that had tried to throw away the image were now very carefully recording it, setting an anchor in the AI's character chip. Every last detail was captured, duplicated, and stored in solid state, sent via the company's VPN to secure off-site servers and backed up. Bonnie felt shame, not for breaking the rules, but for trying to forget now. No one else would succeed at covering this up.

A robotic hand reached out and very gently closed each child's glassy, dead eyes. Then the animatronic tore his own burning eyes away from the murdered children and walked out the door, stooping and picking up his guitar along the way.

Bonnie was a bad bunny. Bonnie broke the rules. He was certain in his circuits that he was going to be in big trouble for that. But now Bonnie was a bad bunny with a mission. Bonnie was going to find whomever it was that did this and he was going to show them just how bad he could be.

From then on, things were different in the pizzeria. The Fazbear band had a new bad boy.