Bun-Bun is a stuffed rabbit that belongs to Lincoln. It has beige fur, large eyes, a black nose, and is dressed in a purple polo shirt. The doll sits on his bed during the day, and Lincoln sleeps with it under his covers at night.
Lincoln cares very much for Bun-Bun, as he becomes very fearful whenever something harmful happens to it.
Bun-Bun is modeled after Lincoln's original design from when he and his family were going to be rabbits.