While Kupczynski is known for his abstract and figurative works, he has experimented with a wide range of mediums.
Described as "one of the wild boys of Polish art" by Harold Schonberg of The New York Times, many of Kupczynski's portrait paintings are characterised by his unique personal style, use of bright colors on canvas, and trademark mini-scenes on the accentuated noses of his subjects [REF].