John Randall Hennigan (born October 3, 1979) is an American professional wrestler, actor and traceur, who currently wrestles for Impact Wrestling under the ring name Johnny Impact. He is best known for his tenure in WWE where he used the ring names John Morrison and Johnny Nitro. He is also known for wrestling in the independent circuit, Lucha Libre AAA Worldwide and Lucha Underground under the ring name Johnny Mundo. Hennigan was the winner of Tough Enough III, a televised competition that would award the winner a WWE contract, and was assigned to their developmental territory, Ohio Valley Wrestling (OVW), to continue his wrestling training.

In 2009, Hennigan and Maryse Ouellet were interviewed on Eurosport. In 2009, Hennigan appeared on two episodes of Are You Smarter Than a 5th Grader?, which were both aired on September 29. Hennigan is the subject of a WWE DVD, called John Morrison - Rock Star, which was released on February 16, 2010. The DVD covers his career from his name change to John Morrison up until his Intercontinental Championship win in September 2009. He appeared on an episode of Destroy Build Destroy on March 3, 2010. Hennigan was on the cover of Muscle & Fitness in June 2010, with the issue also featuring an interview and photo shoot.  After leaving WWE in 2011, Hennigan started to pursue acting as a career and as a way to improve his promo skills. In 2013, he co-starred in 20 Feet Below: The Darkness Descending with Danny Trejo. Hennigan also appeared as a cameo in the first episode of Video Game High School's third and final season. Hennigan portrayed "The Hammer" in the wrestling themed Air Bud spin-off Russell Madness. In 2015, Hennigan signed on to play the lead role in the action horror film Diablo Steel.  Hennigan is also a frequent collaborator with comic book-based film producers Bat in the Sun Productions, appearing in two episodes of their well known Super Power Beat Down series; playing as Casey Jones against Kick-Ass in episode 13, and as Winter Soldier against Nightwing in episode 19. Hennigan will be portraying Eternal Warrior in the web series Ninjak vs. the Valiant Universe, produced by Valiant Entertainment and directed by Bat in the Sun.  In 2016, Hennigan, Rey Mysterio, and King Cuerno appeared on ESPN to promote the second season of Lucha Underground.

Using a quote from the above article, answer the following question: What did he act in?
he co-starred in 20 Feet Below: The Darkness Descending with Danny Trejo.