Judithe Hernández had become acquainted with Carlos Almaraz when they attended graduate school at Otis Art Institute in Los Angeles and he introduced her to the group.
[3][4] With the addition of Judithe Hernández, Los Four became one of only two major Chicano artist collectives to include a woman, the other being ASCO (Willie Herron, Harry Gamboa, Jr., Gronk, and Patssi Valdez).
The first was Los Four, which included Carlos Almaraz, Gilbert (Magu) Lujan, Robert (Beto) de la Rocha, Frank Romero, and Judithe Hernández.
Vazquez notes" It is safe to say that this grouping of artists, known collectively as Los Four, "legitimized" Chicano art in the Anglo American art world..." "Today, Frank Romero, Carlos Almaraz, Gilbert Lujan, and Judithe Hernández represent a group of Chicano artists who have attained international respect and are admired for producing original and exceptional bodies of work."
All of the members of Los Four have enjoyed successful solo careers as visual artists and have exhibited extensively in the United States, Latin America, and Europe.
With John Valadez, he painted the 200-foot-long Return of the Maya in Cypress Park, La Adelita in the Ramona Gardens Housing Project with Judithe Hernández, and California Dreamscape (completed after his death).
And in 2013, Judithe Hernández was awarded the coveted commission to create 24 large scale individual mosaic panels for the Downtown Santa Monica EXPO Line Grand Terminus Station at Colorado & 4th Street.