Who was the second pop art artiest?

The title of the "second pop artist" is somewhat subjective, but many consider Roy Lichtenstein to be one of the earliest and most prominent figures in the pop art movement after Andy Warhol. Lichtenstein is known for his comic strip-style paintings and use of Ben-Day dots, which helped define the style of pop art in the 1960s. His work often satirized consumer culture and the art world itself, solidifying his place in the movement alongside Warhol.