Main characters

• Chuck Billy (Chico Bento)

• Rosie Lee (Rosinha) - Rosie Lee is Chuck's girlfriend. She mostly appears in the stories dating Chuck or just showing her jealousy of him. Unlike her boyfriend Rosie is a clean, well dressed, and vain girl, though just like him also speaks with a caipira accent. She originally debuted timidly in the comics almost at the same time as Chuck, at first as a support character that was only a love interest for Chuck, only becoming his official girlfriend in the 1980s where she became more prominent in the stories. Her parents rarely appear in comics, mainly because her jealous father disapproves her relationship with Chuck. She studies in the same class as Chuck, although in several stories she does not appear in the school, sometimes being shown that she is a year younger than Chuck and his friends.
• Zeke (Zé Lelé) - His name in Portuguese means something like "Joe Nuts". He is Chuck Billy's country cousin, is very distracted and is as bad a student as Chuck. His character was inspired by the twin brother of de Sousa's granduncle, who was the inspiration for Chuck Billy.^[1]
• Cousin Benny (Zé da Roça) - Originally called Zé da Roça, which literally means "Joe from the farm", Benny is one of Chuck's best friends. He is the top student of his class and one of the few characters who don't speak with a caipira accent.
• Taka (Hiro) - Taka is a Japanese descendant. He also speaks correct Portuguese, and lives in a typical Japanese house, adopting some habits from Japan, like Bonsai, Ofuro, etc.

Minor characters

• Zeca (Zeca) - His name is hardly mentioned, as people would call him simply "Chuck's Cousin". He is sometimes called Zeca, but he once introduced himself as Osvalderson.^[3] Zeca lives in the city with his parents. In most of the stories featuring him, the main issues are the differences between life in the city and on the farm. When Zeca comes to visit Chuck, he suffers because of the lack of technology and modern equipment. On the other hand, when Chuck visits Zeca, he finds himself lost in the middle of so much technology and other objects he doesn't understand.
• Teacher Marocas - She is the teacher of the local school. she doesn't teach a specific subject, her classes are mostly about basic grammar, literature, history, geography and sciences. She faces a daily challenge when it comes to teach Chico, because of his poor grades and the fact that he never does his homework.
• Mr. Lau (Nhô Lau) - Mr. Lau owns an orchard filled with Apple Guavas, which are frequently "visited" by Chuck and his friends, who steal his fruits. Mr. Lau would respond to these constant attacks by shooting them with his Rifle, which is not charged with true bullets, but with lead, the fruits of the castor oil plant, or even salt.
• Genesinho – Genesinho is the son of the local Colonel, and is a rival to Chuck Billy, because of his attempts to date Rosie Lee. As Genesinho is much richer, well-dressed and cleaner than Chuck, Rosie Lee tends to have a crush on him, but in the end she always comes back to Chuck.
• Mr. Billy (Nhô Bento) - Chuck Billy's dad. He works hard on the farm to support his family and wants Chico to study so he can have a better life.
• Mrs. Cotinha - Chuck Billy's mom.
• Granny Mae (Vó Dita) - Granny Mae is Chuck's grandmother. She is famous for the stories she tells Chuck and his friends. These stories are mostly based on life stories of people she knows, and are sometimes dosed with some folkloric elements. She was inspired by de Sousa's own grandmother.^[4]
• Animals - Beyond living on a farm, Chuck is very friendly with animals. Because of this, he holds close relationships with his "pets", which are typical farm animals. The most famous are his chicken, his cow, and his pig, which are called Ma Megg (Giserda), Malhada and Pork Chop (Torresmo). He also owns an unnamed dunce, a dog named Fido and several other animals which appear occasionally. There's also the Jaguar (Onça), a wild feline that is mostly a threat to Chuck and his friends, but would sometimes be treated like a friend. As a wild animal, she lives in the local jungle.

Animation

The first appearances of the characters in animation were in TV commercials in the 60s. Several animated adaptations of the comics were adapted into episodes in films such as As Novas Aventuras da Turma da Mônica, Chico Bento, Oia a Onça! and Cine Gibi 2, in total there were 12 episodes focused on Chuck Billy between 1986 and 2005 with some shorts made exclusively for DVDs. Chuck Billy also makes a cameo in the Monica's Gang's 2007 animated film: Uma Aventura no Tempo.

Chuck Billy, Zeke, Rosie Lee and some animals appear occasionally or star in some episodes of the web cartoon Monica Toy. Ma Megg, the Chuck Billy's pet chicken, also appears as one of the protagonists of the web cartoon Biduzidos.