They were children killed by William Afton in 1985, their souls is trapped in the pizzeria. They usually get out of their animatronics to roam around as ghosts.

Cassidy- “SUSIE THE PIZZAS BURNING!!”

Susie- Rushes there “OH GOSH!! I LEFT IT IN THE OVEN TOO LONG!!”

Jeremy- Roaming around

Fritz- “I SWEAR IF YOU GUYS BURN THE DANG PIZZERIA DOWN.”

Gabriel- “Sigh..”