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.






