Gels Gas born Ángel Sánchez Gas was a Mexican filmmaker, actor, poet, painter and sculptor.

Angel Sanchez Gas (1933–2015) was popularly known as Gelsen Gas, an alliterative pseudonym. He was a multifaceted and interdisciplinary artist, theater director, film director, film producer, actor, painter, poet, sculptor and inventor, based in Mexico City, Mexico. His career and style are highly diversified and hard to classify. He is most commonly known for his paintings and geometrically constructed artworks. Among his most famous works are the film 'Anticlimax' (1969) featuring Alejandro Jodorowsky, his painting 'Homenaje a Magritte' (1969), an homage to the Belgian surrealist artist René François Ghislain Magritte and his self-portrait 'Autogelsen' (1971). Gas himself has work visually inspired by the surrealism movement.