role reversal
Images or animations depicting two or more characters of a pre-established setting, in which each character is displaying the traits of the other, whether it'd be personalities or roles in erotic scenes. This can be as simple as a picture depicting a normally submissive character roughly dominating their sexual partner, who is meekly lying back and taking it.
Alternatively, this can depict either a normally subservient species, such as a Pokémon or Digimon, taking control over more domineering one or topping and bottoming characters switching roles.