For example, all females:
These stereotypes may be true for some males and females, but they are not true for all. And it is this fact that is brought to light in Brockwell the Brave.
Brockwell Ness is described as a quiet, gentle boy who likes to spend time at the healing hut. He is a carer by nature. Brockwell also likes to go to the markets and buy the food for his mother. These are not what boys do in the Viking village, and Mr Ness, Brockwell's father does not cope well with this. He doesn't like that his son is different and likes to do 'women's work'. In the story, Brockwell's best friend, Ingrid Gulbrand, is a strong female. She still does tasks considered to be 'women's work', so is more accepted. There were some female warriors in the Viking era, so she was not totally out of place, like Brockwell was.
The story brings to light that boys and girls are individuals, and their gender is only a part of who they are. Their genders do not define Brockwell and Ingrid as people.