Loosely based on Monster on the Hill, a graphic novel by Rob Harrell, the film stars the voices of Will Arnett, Geraldine Viswanathan, Terry Crews, Stephen A. Smith, Jimmy Tatro, Tony Danza, Susan Kelechi Watson, Tony Shalhoub, Bridget Everett, Greta Lee, Ben Schwartz, Roman Reigns and Becky Lynch.

Winnie interferes in the match and causes Steve to win instead of taking a dive as the underground arena employer Lady Mayhem wanted.

Even though Steve repays Lady Mayhen, he decides to help Winnie, reveals his identity as Rayburn's son, and challenges Tentacular to a match for the stadium.

The crowd gets Steve back up by clapping a salsa beat and he is able to defeat Tentacular, becoming the new monster wrestling champion and saving the stadium.

On February 18, 2015, Reel FX Creative Studios announced an adaptation of the 2013 graphic novel Monster on the Hill by Rob Harrell, to be written by Matt Lieberman.

[3] On April 25, 2018, Paramount Animation announced that joined the film as a co-producer, with Walden Media, at CinemaCon in Las Vegas.

Becky Lynch, Roman Reigns, Ben Schwartz, Jimmy Tatro, Tony Danza, Susan Kelechi Watson, Carlos Gómez, Charles Barkley, Chris Eubank, Bridget Everett, Michael Buffer, and Stephen A. Smith, revealing their involvement in the film.