BB can't say anything except for "hi" and "hello". JJ has many more voice lines and she doesn't even use them.
BB gives out balloons, while JJ gives out tokens. That is, if you can find her. She likes to hide, but the reward is worth the search!
They see Puppet as their older sister figure and like to follow her around.
BB is mischievous, but only as much as any kid would be. He doesn't really understand that he’s causing harm.
BB can be just as shy as his sister sometimes, preferring to hide behind Toy Bonnie or Withered Foxy when seperated from his twin.
BB likes Captain Foxy, but JJ is afraid of him.
Their clothing is real fabric, and their hats really spin! Like fancy doll clothes.
JJ is especially bashful, and prefers to stare at someone and thoroughly decipher the Vibes before interacting. If BB is near, she likely isn’t too far!
BB has a built-in helium tank for inflating balloons right at his fingertips. Inspired, William would revisit the concept later on for Circus Baby.