Gronk (born 1957 in East Los Angeles, California, USA) is the artistic name of Chicano painter, printmaker, and performance artist Glugio Nicandro.
Gronk was a founding member of ASCO, multi-media arts collective in the 1970s. Influenced by European film, existentialism, and literature (i.e., Camus, Beckett) Gronk and his early teenage cohorts made "movies without film", farcical "happenings" on the streets of their native East LA, with Patsi Valdez (magical realist painter of ominous domestic interiors) starring in female roles. Gronk is largely self-taught. Gronk has been involved with theater since his teenage ASCO days, and through more elaborate stage design for organizations such as the Los Angeles Opera and Santa Fe Opera. His scenic work has also been featured onstage with Latino Theater Company and East West Players. He has collaborated with composer Joseph Julian Gonzalez on “Tormenta Cantata,” a visual/musical piece performed in 1995 with Kronos Quartet at University of California, Los Angeles and at the University of Wisconsin-Madison. Max Beckmann and the paintings of Phillip Guston inspire Gronk’s work. Gronk is prolific, filling pages of sketchbooks daily, often while enjoying his favorite cup of coffee on the streets of Los Angeles. He mostly paints at night. Gronk joins many first-class artists collaborating with master printers at Tandem Press.

Gronk had known from an early age that he wanted to be an artist. "Drawing was as an escape for me - from poverty, from my environment. It was a way of creating new worlds for myself." Several of the prints he created at Tandem Press include depictions of his signature image of "La Tormenta," a solitary figure with her back facing the viewer. A reoccurring theme, this metaphoric figure is ambiguous: sometimes comical, sometimes tragic.