Bonnie

Bonnie is a supporting antagonist in FNAF and the former main protagonist of FNAF: The Stories Season 3.

Appearance
Bonnie is a purple bunny, sporting a red bowtie as well as a guitar. His belly has white fur covering a round part of his body

Season 3
After the Fazbears were defeated at the third pizzeria, Golden Freddy transfered himself to Bonnie, giving him a power to go into any other animatronic's mind and turn them back into themselves. However, the power would be shifted to somebody else once Bonnie completed that task.

After freeing Chica, Bonnie was considered the commander/leader by the rest. Toy Chica tells him that he shouldve warned her about a "purple friend", leaving Bonnie (who hadn't seen this "friend") in confusion.

The friends finally free everyone and are able to release Golden Freddy. However, Golden Freddy states he never told Bonnie how to free him, leaving Bonnie and the others in confusion. However, with Springtrap nearing fast, they have no time to question it.

Golden Freddy teleports the rest back while he fights Springtrap. However, once the other animatronics get back, they find the third pizzeria on fire. Realizing he failed, Bonnie runs out of ideas as the 6 AM bell chimes.

Bonnie and the others wake up to find out theyve been moved to the first location. They realize Golden Freddy is most likely dead, and start to grieve. However, they find Golden Freddy walking in, with Springtrap.

Springtrap reveals he had been mind-controlled by a purple figure. And after a long story, the rest of the animatronics forgive him.

Season 4
Bonnie is first seen when he tries to kill the night guard. He doesnt make it in, however, Toy Chica does. But she leaves Bonnie and the rest in surprise when Toy Chica decides not to kill the night guard. Freddy, enraged, commands her to while sending Bonnie to the ground.

In a later event, Bonnie and the others find Freddy thrown out of the backroom, followed by Shadow Freddy, who had been released. Shadow Freddy takes all the animatronics' (other than Toy Chica's) powers, changing into Nightmare.

However, it is revealed Mangle is the traitor among them. After her story, the animatronics decide to flee, with Golden Freddy trying to open the portal he'd been working on. The portal opens, and Bonnie is the last one to jump in as Nightmare enters the room and throws his sword through the portal.

Death
Bonnie arrives last through the portal in the FNaF 2 location, and it is revealed the bunny had been impaled by Nightmare's sword. Bonnie gets rested in a party room on a table and, realizing he isn't gonna make it, tells Toy Chica to keep fighting and he's sorry.

Surrounded by all of his friends and getting weaker, he dies, much to the dismay and shock of Toy Chica.

Trivia

 * Bonnie is Zajcu's favorite character.
 * Bonnie was the first main protagonist to be killed off, Foxy coming in second, and Toy Bonnie coming in third.