Chuckie has uncontrollable red hair with fair skin, freckles and 2 buck teeth and wears purple square glasses, a blue short sleeved shirt with a red collar, cuffs and a picture of Saturn in front, green short with yellow squiggly lines, brown ankle-high socks, red sneakers with untied laces, diapers (until Sand Ho!), light blue, beige or white bear-patterned training pants (Form Chuckie V.S. The Potty), dark blue or white briefs (afterwards).
- Chuckie is voiced by Nancy Cartwright (who voiced Bart Simpson), who replaces the late Christine Cavanaugh, respectively.
- Chuckie's imaginary friend is Barney the Dinosaur.
- Chuckie will guest star in Winnie the Pooh Meets Spider-Man 2.