Stallone and Bear Grylls to develop adventure series

Sylvester Stallone, Bear Grylls and Endemol Shine North America have established a production partnership with plans to create high-adrenaline series.
The two adventure titans are teaming up to create “genre-bending” adventure series.
Stallone will exec produce via his Balboa Productions (along with Kourosh Taj, his head of unscripted development and Carrie Keagan), while Grylls will exec produce for his Natural Studios (which is a joint venture with Banijay, alongside his co-CE