- Anvilicious: Reforming Nature and The Size Switch had a pacifistic message during World War II with a very heavy-handed approach. The former had a subplot where Mrs. Benta visits a meeting between nations where she makes a speech pleading for peace, while in the latter, Emilia shrinks humanity in size in an attempt to end WWII. Though in its defense, it was written in 1941, at a time Brazil was still neutral before joining the war in 1944 so Lobato may have written that from a neutral's perspective.
- Ensemble Dark Horse: Emilia is technically one of the main characters, but she is regarded as the Series Mascot due to her strong personality.
- Fair for Its Day:
- Despite the painfully dated language used to describe them, Aunt Anastasia and Uncle Barnabé are never anything other than positively depicted and despite their position as house staffers, they were very wise and intelligent characters.
- Being such a headstrong and independent female character, Emilia was quite progressive for the time period she was written. It wouldn't look out of place by today's standards, but it sure was something in 1920.
- Values Dissonance:
- The books received accusations of stereotyping black people: Aunt Anastasia embodying the Mammy stereotype and Uncle Barnabé veering close to Magical Negro territory. Saci, the most prominent supernatural black character in the series being a Trickster Archetype doesn't help either.
- Pedrinho's Hunting deals with Pedrinho engaging in poaching when he pursues a jaguar spotted around the farm. Given that the jaguar has become a endangered species in recent years in Brazil as result of illegal hunting and as of 2016 only a few hundred remain, it may leave a bad taste in the reader's mouth. This is why the 2001 live-action series changed the story, from trying to kill it into saving it from evil poachers.
- Certain tales from "Diverse Stories" will come across as very racist to modern audiences.
- While the overall message for Reforming Nature and The Size Switch'' isn't bad on itself, it comes across as very naive when you consider its about World War II (its a children's book, but still) and that it takes a very neutral approach, which became dated not too soon.
- What Do You Mean, It's for Kids?: Certain entries in the series contain some... Questionable content.
- Hans Staden is about the real-life German soldier of the same name that endured captivity at the hands of a Brazilian tribe that practiced cannibalism, of which he nearly became a victim.
- The Minotaur and The Twelve Labors of Hercules feature Greek mythology in its faithful form with many of its unpleasant elements intact (such as the way the Minotaur was conceived). The latter in particular has the kids being exposed to all sorts of cruel and unusual violence such as King Diomedes being fed to his man-eating mares and a very graphic duel between Hercules and Ares.
YMMV / Sitio Do Picapau Amarelo