Trejo is known for his distinctive appearance. In addition to his heavily lined face, scarred from cystic acne and a brawl, and the long hair and mustache he usually sports, he has displayed the large tattoo on his chest for many roles (the tattoo depicts a woman wearing a sombrero). He often plays thugs or lowlife characters, although he has also played sympathetic characters in films such as Robert Rodriguez's Spy Kids trilogy, Bubble Boy, and the USA Network series Monk, where art imitated life in his portrayal of a convict roommate of Tony Shalhoub's undercover detective. He also appeared in a season 2 episode of Desperate Housewives, where, as another good-guy character, he was sent by Carlos to help Gabrielle deal with the grief over losing her unborn baby. He voiced the character Enrique on King of the Hill, and Octavio's character on that show is based on his appearance. His role on King of the Hill was referred to in the HBO series Unscripted, where he had a cameo appearance. He also is featured in the episode "Comedy" (season 5, episode 1, aired February 28, 2010) of Tim and Eric Awesome Show, Great Job! and an episode of Do IT LIVE with actors Anna Bennett and Claudia Pickering, shot in Downtown Los Angeles, titled "Sebring feat. Danny Trejo". He also made guest appearances, as Tortuga (a. k. a. "The Tortoise"), in the noted series Breaking Bad in 2009 and 2010, most notably in the episode "Negro y Azul" which originally aired on April 19, 2009. In 2011, he appeared in the action movie Recoil, with WWE wrestler Steve Austin.