Claudio Castellini, born 3 March 1966 in Italy, is a comic book artist best known for his dynamic, hyper-detailed style and work on major American superhero and fantasy titles. His career began in the late 1980s, and he quickly gained recognition for his powerful, muscular figures and cinematic layouts. Castellini’s most prominent work includes the miniseries *Wolverine: The End*, the crossover event *DC versus Marvel* (and its companion *Marvel versus DC*), and runs on *Batman* and *Conan the Barbarian*. He often collaborated with writers like Paul Jenkins and Ron Marz. Castellini’s art is noted for its intense action sequences and meticulous rendering, making him a sought-after cover artist and interior illustrator. He has also worked as a colorist, inker, letterer, and writer on select projects, contributing to 67 issues between 1989 and 2024. While he never achieved the mainstream fame of some peers, Castellini’s work remains admired by fans of 1990s and 2000s superhero comics, particularly for his contributions to the Marvel and DC universes. He continues to work in the industry, maintaining a dedicated following.