The traditional theme of the sci fi/ fantasy novels have now portrade both male and female characters as equal by their character roles and express themselves more for the audience to know and understand the characters more. One of the characters from the fantasy novel series Harry Potter Hermione Granger, a young witch who studied in Hogwarts and very knowledgable of the wizarding world which makes female characters like her as one of the supporting examples for female characters.
Back in the early days, most novels were mostly of one type of theme; for science fiction it was purely of futurisitc, space adventure. For fantasy it was of heroes fighting beasts and evil sorcerors to save a damsel in distress. Obviously signs of a single gender dominance which usually feature a strong, handsome men who seem to show off their physical features, and alongside them are scandily clad beautiful women. such examples to narrow down are the John Carter series and King Kong. Obvious signs of attraction the most audiance to see the characters in such appearance.
But until over the years, these genres soon changed and slowly blended with other genres and the two together to create new ideas and inspirations. Most novels have been written by women and leveled the demograph between two gender themes instead of one over the other. One such novel Frankenstein's monster was written by a 19th century writer Marley Shelley.
Although some traditional roles remain after many years but have improved for many reading audiance to merge with other genres like romance, adventure, action, even fantasy to expand the imaginative minds.