Kazimieras Gediminas Prapuolenis, known professionally as Kaz, is an American cartoonist, animator, writer, storyboard artist, and illustrator. In the 1980s, after attending New York City's School of the Visual Arts, he was a frequent contributor to the comic anthologies RAW and Weirdo. Since 1992, he has drawn Underworld, an adult-themed syndicated comic strip that appears in many alternative weeklies.

Raw was a comics anthology edited by Art Spiegelman and Françoise Mouly and published in the United States by Mouly from 1980 to 1991. It was a flagship publication of the 1980s alternative comics movement, serving as a more intellectual counterpoint to Robert Crumb's visceral Weirdo, which followed squarely in the underground tradition of Zap and Arcade. Along with the more genre-oriented Heavy Metal it was also one of the main venues for European comics in the United States in its day.