The studio likely gives you control over rigged characters. To make Freddy walk:

0:00 - Intro 0:45 - The Lobby (Lighting Comparison) 2:15 - Glamrock Freddy Model Showcase 4:30 - Atrium Atmosphere 6:00 - Final Thoughts

One major concern is copyright. Generally, you can create fan games using their characters (Freddy, Bonnie, etc.) as long as you do not sell the product or claim it as your own.