John Semper Jr. (born August 14) is an American screenwriter, producer and story editor with numerous credits in animation for television.
Semper is the creative originator of the "Spider-Verse", also known as the "Spiderman Multiverse", a storyline propagated in various Spider-Man comics, cartoons and films in the early 21st century.
Animation and Hanna-Barbera Productions during a career which has involved the development of projects for Jim Henson, George Lucas, Stan Lee, Rob Minkoff and others.
Semper created the English-language dialogue for two of Hayao Miyazaki's anime feature films Castle in the Sky and Kiki's Delivery Service, and co-wrote the screenplay for the live-action comedy Class Act.
[5] His books include The Singular Affair of the Missing Ball: A Sherlock Whippet Mystery (Lulu Press, 2005), as well as several books based on his scripts for the TLC/PBS Kids preschool series Jay Jay the Jet Plane, and Kids' WB action/adventure series Static Shock.