Underground comics, often called "comix," emerged in the 1960s as an alternative to mainstream comic books. They are characterized by their independent production, unconventional art styles, and often controversial themes. These comics frequently address social issues, counterculture, and personal experiences, reflecting the sentiments of the era. Creators like Robert Crumb and Art Spiegelman played significant roles in popularizing underground comics. Unlike traditional comics, which are typically aimed at younger audiences, underground comics often target adults and explore mature topics. This genre has influenced modern graphic novels and continues to inspire artists today.