Slender, long red messy hair, purple glasses, buckteeth, light blue shirt with Saturn on it, white sleeveless undershirt, green shorts with yellow squiggly lines, brown ankle-high socks and red shoes with untied shoelaces, diapers (until Chuckie vs. The Potty), beige, light blue or white bear-patterned training pants (afterwards), dark blue or white briefs (Season 3 onwards)
Charles Crandall "Chuckie" Finster, Jr. (born September 12 1988) is the adorable best friend of Tommy Pickles and acts as the series' deuteragonist. In "Rugrats in Paris: The Movie", however, he serves as the main protagonist. Chuckie's mother Melinda died from an illness when Chuckie was a baby. In "Rugrats in Paris", his father Chaz was going to marry Coco LaBouche, a lovely but evil woman who hates children, and tries to get Chas to fall in love with her. But in the end he married Kira, Kimi's mother. His pretty stepmother is loving and caring as is his father. Chuckie also has a puppy named Sparky, although it is never seen.
Despite his cuteness, Chuckie is a pessimist and scares easily, and at the first suggestion that he and the other babies should do something or go somewhere, he will always say, "Maybe this isn't such a good idea." All the same, he's still friends with Tommy, Dil, Susie and the DeVille twins. Among his fears are adventures, clowns, and the "guy on the oatmeal box with the scary hat" (a parody of Quaker Oats). He is loyal and often brave, facing his fears (albeit briefly) to come through for his friends, whenever there's a problem, Chuckie's there to help his friends get through it emotionally. Chuckie doesn't really like misbehaving, but his friends often get him into trouble. He is very close to his father Chaz and is usually the main target of Angelica's bullying. Chuckie was the only character who does not come from a two-parent household before the remarriage. its revealed in "the alien" that Chuckie has an outie belly button