Killer Acid is the psychedelic art and apparel brand of the artist Rob Corradetti, who works from a studio in Santa Cruz, California. Corradetti draws four-eyed cats, smoking birds, grinning mushroom guys and other psychedelic creatures in a style he calls “one part hippie, one part punk, one part busted-up junk in the trunk”.He founded Killer Acid in 2010, after years spent screen-printing T-shirts and band posters.,
Corradetti grew up in suburban Delaware, where he began drawing seriously as a teenager, filling notebooks with pen-and-ink sketches. At 17, in 1994, his father introduced him to the owner of a screen-printing shop in Ocean City, Maryland, and Corradetti created his first brand, Craggy Sun, selling T-shirts out of his car trunk for $20 each.He moved to New York City in 1999, living there until 2018 while working in advertising and immersing himself in the city's underground comics and punk music scenes.,,
He relocated to California in 2018 and settled in Santa Cruz in 2020, where the Killer Acid studio also became the base for a team of six people making screen prints, paintings and merchandise shipped worldwide.,His influences include Pee-wee's Playhouse set designer Gary Panter, whom he later met, and the Santa Cruz skateboard artist Jim Phillips, alongside what he calls a David Lynch approach of “catching the big fish” of ideas as they surface.,
He released an Ordinals collection, No Brainers, his first project on the format, in collaboration with the platforms SuperRare and Gamma.In 2025 his painting Results May Vary appeared in Sotheby's Contemporary Discoveries auction alongside work by Andy Warhol, Chuck Close and Sol LeWitt. Corradetti described the piece as capturing “psychedelic spontaneity and the joy of creation”.