A teenager finds a secret civilization of mighty trolls beneath the small town of Arcadia.
- Creator: Guillermo del Toro
- Starring: Kelsey Grammer, Anton Yelchin, Emile Hirsch, Charlie Saxton, Lexi Medrano
- TV Network: Netflix
- Premiere Date: Dec 23, 2016
- Genre: Kids family
- Executive producers: Guillermo del Toro, Marc Guggenheim, Rodrigo Blaas, Christina Steinberg, Chad Hammes