Zeppeli refers to a family lineage in the popular manga and anime series JoJo's Bizarre Adventure. The Zeppeli family is known for their mastery of the Hamon technique, a martial art that allows users to harness their life energy to combat supernatural threats. Key characters from the Zeppeli family include Will A. Zeppeli and Poco Loco Zeppeli, who play significant roles in the series. Their contributions often involve mentoring the main protagonists and fighting against powerful enemies, showcasing the family's dedication to protecting humanity from evil forces.