[clarification needed] Mauricio was trying to represent how a hillbilly would talk by writing his lines in a caipira accent.

"[5] Mauricio de Sousa later stated in his Twitter profile:[5] It's obvious, but I'm going to explain: I would never make such an impolite thing, as my readers know very well.Governor of Bahia Jaques Wagner later apologized for the mistake.

Chuck Billy was the first child character of Mauricio that attended school, even though he is shown to be a terrible student, specially in his earlier stories.

He makes every kind of mistake a student can, such as coming up with excuses (which most of them are hard to believe) of why he ended up being late for school, getting bad grades and not paying attention to class - though he also attains some success every once in a while.

The sacis are recurring characters, nearly always against the humans, such as popular folk creatures such as the werewolf, the Headless Mule and the Boitatá.