Dean Motter is an illustrator, designer and writer who has worked for many years in Canada (Toronto) and the United States. He is best known for his album cover designs, two of which won Juno Awards. He is also the creator and designer of Mister X, one of the most influential "new-wave" comics of the 1980s.

Mister X was a series of comic books first published in 1983–1990 by Canadian company Vortex Comics. Created by album and book cover designer Dean Motter, it was developed for a year in close collaboration with comic artist and illustrator Paul Rivoche, whose series of poster illustrations stirred up great interest in the project. The series published early work by comic artists who would later emerge as important alternative cartoonists, including Jaime Hernandez, Gilbert Hernandez, Mario Hernandez, Seth, Shane Oakley and D'Israeli.