Horatio Sanz

Horatio Sanz was born in Santiago, Chile, and raised in Chicago, where he became part of the city's improvisational comedy community. He trained under Del Close at ImprovOlympic, the Chicago institution co-founded by Close and Charna Halpern where the Harold long-form format was developed, immersing himself in the ensemble performance tradition that Close had developed and refined into a systematic training curriculum. Close's teaching emphasized total commitment to character, genuine ensemble listening, and the pursuit of pattern and theme rather than the accumulation of individual joke moves, and Sanz's training under Close gave him the foundational ensemble sensibility that would shape his subsequent career.

Sanz performed at Second City Chicago, the institution at the center of Chicago's comedy ecosystem, developing his character work and ensemble skills in the Second City revue format alongside other performers moving through the institution's training program and touring company structure. Second City's approach to revue development, combining scripted scenes, character work, and improvised suggestions from audiences for additional scenes, provided Sanz with experience in both the scripted and improvisational dimensions of ensemble comedy performance.

In the early 1990s Sanz became a founding member of the Upright Citizens Brigade, the sketch comedy troupe that Matt Besser assembled from the Chicago improvisational comedy community. The original UCB group included Besser, Sanz, and eventually Amy Poehler and Matt Walsh, who joined after Poehler's training at ImprovOlympic and iO. UCB moved to New York and performed at various venues before establishing its home theater on West 26th Street in 1999, which became the anchor institution for the long-form improv tradition in New York. UCB's training center subsequently expanded to multiple locations in New York and Los Angeles, and the UCB model became one of the most widely distributed frameworks for improv education in American comedy.

In 1998 Sanz joined Saturday Night Live as a featured player, becoming the first Latino cast member in the show's twenty-three-year history. He was promoted to repertory cast member after his first season, joining fellow promoted players Jimmy Fallon and Chris Parnell in the 1999 cast reconfiguration. He remained on Saturday Night Live through 2006, performing across eight seasons. During his tenure he developed a range of recurring characters and ensemble sketch contributions, and his time on the show overlapped with cast members including Will Ferrell, Tina Fey, Amy Poehler, Seth Meyers, and Kenan Thompson, contributing to the show's identity across the late 1990s and early 2000s.

After leaving Saturday Night Live, Sanz continued performing in improv and sketch comedy contexts, including appearances in ASSSSCAT 3000, the longstanding unscripted improv showcase at Upright Citizens Brigade Theatres that has featured major figures in Chicago-lineage improv since the early 2000s. He has also appeared in film and television projects in character and comedic roles, maintaining an active presence in the broader comedy industry.