Jock is the pseudonym of Mark Simpson, a British comic book artist and illustrator known for his work on titles such as "Batman," "Judge Dredd," and "Wolverine." He has worked for major publishers such as DC Comics, Marvel Comics, and 2000 AD, and has collaborated with writers such as Grant Morrison, Scott Snyder, and Andy Diggle. Jock's style is characterized by his use of bold lines, dynamic compositions, and striking imagery. He often employs a limited color palette and employs various techniques to create texture and mood in his work. In addition to his comic book work, Jock has also created artwork for films such as "The Dark Knight," "Dredd," and "Star Wars: The Last Jedi," as well as album covers and other commercial projects.