He began working immediately in motion picture advertising where he painted dozens of movie posters, including many for Walt Disney Pictures, such as The Little Mermaid, Bambi, Peter Pan, Cinderella, and The Jungle Book.
For The Simpsons he has created thousands of drawings for T-shirts, video games, posters, toy packaging, books, calendars, limited edition prints, etc.
When The Simpsons creator Matt Groening decided to start a comic book company, Bill was hired on as art director and drew the very first Simpsons comic. He has had a hand in nearly every Bongo Comic to date, either writing, pencilling, inking or supervising.
Bill also worked with Groening on early character designs for the TV show Futurama and served as the series art director.
In addition to his work on The Simpsons and Futurama, Bill has written and drawn his own comic book series; the four-time Eisner Award-nominated Roswell, Little Green Man and co-created two other comic book series, Heroes Anonymous and Lady Robotika (the latter with Jane Wiedlin of the legendary all girl rock band, The Go-Go’s).
More recently, Bill has rekindled his relationship with the classic Disney characters with an ongoing series of limited edition animation art prints. He has also written three Vault of Simpsonology books for Insight Editions. The latest one, Mr. Burns’ Book of World Domination will be out before October. The first two are Homer Simpson’s Little Book of Laziness and Bart Simpsons’s Manual of Mischief.