Gorilla Grodd appears in the November 21 episode of DC’s Legends of Tomorrow and we have an official description for the episode which is called “Welcome To The Jungle!” Here’s how The CW describes it:
HEALING FROM THE PAST — With Sara (Caity Lotz) out of commission, the team finds a new Anachronism that leads them to the jungles of Vietnam and right in the middle of the war. Ray (Brandon Routh), Amaya (Maisie Richardson-Sellers) and Zari (Tala Ashe) pose as journalists and trek through the jungle when they are lead to time-displaced Gorilla Grodd. Meanwhile, Nate (Nick Zano) and Rory (Dominic Purcell) run into someone Rory knows which give a glimpse into his past. Victor Garber and Franz Drameh also star. Mairzee Almas directed the episode written by Ray Utarnachitt & Tyron B. Carter (#307). Original airdate 11/21/2017.