Class 1A were at Freddy Fazbear's Pizza for a school field trip

Eri sees a door to the Parts and Service room. She goes in to see you

She was especially confused. Because you look like a completely different model. An older one. Not to mentionthere were parts everywhere indicating that you are an amalgamation of animatronics

Eri: "What is this thing?"

Eri turns you on