Lisette Monique Diaz is a voice actress known for her work in English dubs of anime series. Born in Germany and raised in Texas, she attended the University of North Texas in Denton before beginning her career in the entertainment industry. Her early professional experience included three years working as a character performer at Disney World and Universal Studios Orlando in Florida. She later spent time in California before returning to Texas. In addition to her voice acting work, Diaz has experience as an on-camera commercial actress, singer, dancer, production assistant, photographer, and writer. She is a two-time certified clown through the New York Goofs.

Diaz has pursued extensive professional training in voice acting, studying under numerous established coaches. Her instructors have included Crispin Freeman, Sonny Strait, Neal Malley, Erin Fitzgerald, Steve Blum, Chuck Huber, Bryan Massey, James Larabee, Austin Tindle, Jeremy Inman, Tyson Rinehart, Tyler Walker, Morgan Laure Garrett, Caitlin Glass, R Bruce Elliott, Kyle Philips, Chris Wehkamp, Manny Aragon, Sarah Roach, Dallas Reid, Barry Yandell, Shawn Gann, Kiba Walker, and Anthony Bowling. This comprehensive training reflects her commitment to developing her craft across various aspects of voice performance.

Diaz has secured several prominent roles in anime English dubs. She voices the titular character Jahy in the comedy series The Great Jahy Will Not Be Defeated, which began streaming on Crunchyroll in July 2022. In this series, she leads the English voice cast as the haughty but diminutive demon determined to restore her realm. Another of her noted anime roles is Eevin in the series Skeleton Knight in Another World. She also voices the character Eternity Devil in the English version of the popular series Chainsaw Man. Additional credits listed in her filmography include roles in the television series Eternity Devil and as Maki Hashiba, though specific series titles for these credits are not detailed in available sources.

Through her role in The Great Jahy Will Not Be Defeated, Diaz worked with ADR Director Jonathan Rigg and appeared alongside fellow voice actors including Natalie Rose, SuzAnne DeCarma, Monet Lerner, and Ray Hurd. The English adaptation of this series was produced by Crunchyroll, with Derric Benavides serving as ADR engineer, Neal Malley as mixer, and Ben Phillips as script writer.

Diaz has been recognized for her contributions to the anime industry through guest appearances at fan conventions. She was announced as a featured guest at Anime Island in Edmond, Oklahoma in September 2023, where she participated in fan engagement activities. Her casting as Jahy in a prominent Crunchyroll simulcast represents a significant achievement in her voice acting career.