Roy Lichtenstein was an American pop artist best known for his comic book-style paintings. He was born in 1923 and is considered one of the most influential figures in the Pop Art movement. His work often featured bright colors, bold lines, and a sense of humor. He was also known for his use of Ben-Day dots, which he used to create a sense of movement in his paintings. Lichtenstein's most famous works include 'Whaam!' and 'Drowning Girl'. He died in 1997, leaving behind a legacy of iconic artworks that continue to inspire artists today.