|Best-looking pic I could find.|
All it takes is one flawed idea to lead to another and then another, creating a disastrous cascade effect.
1) Zula is the token.
She's there to shut us up so that black women in particular can't complain about not being seen in Hollywood. After seeing the first film, her ass appears random as hell in the second (ironically, we see her actual ass very often in this movie).
Because she technically doesn't "belong", the writers don't know what the hell to do with her. They don't how to characterize her in a balanced, well-rounded, or even remotely interesting way. In other words, her dark skin makes her so "foreign" and "alien" they have no clue how to properly develop her character. So they make her a teeth-grinding Africanesque warrior who is conveniently the last of her tribe, so that the white audience members won't have to bother with seeing too many Negroes in the film.