In TheHottestDog's eighth anniversary video, when Glitchtrap, Scraptrap, Burntrap and Springtrap took over the show....there were a few things that stuck out to me. 

https://youtu.be/6qivfR5ZBmc

9:45-10:38

- Chica's eyes turn black with white pupils shortly after Foxy woke up (for real, how can Foxy sleep through Freddy's part?)

- Lefty's expression is "WTF??"

- Baby has a hint of delight on her face during the song (probably because Springtrap (her dad) is on the stage doing the bass)

- Bonnie looks like he's ready to attack them when Glamrock Freddy walks by