Mark Tatulli is an American cartoonist and writer, best known for his comic strips, including Lio and Heart of the City. His work often features humor and whimsical storytelling, appealing to a wide audience. Tatulli's unique style combines simple yet expressive illustrations with clever narratives. In addition to his comic strips, Tatulli has also worked in animation and children's books. He has contributed to various publications and has received recognition for his creative contributions to the world of comics. His work continues to entertain readers of all ages.