Monster girl

[2] If a monster girl was not attractive, it usually indicated their powers had become too great for her to control, a trope that dates back thousands of years to Medusa and Scylla of Greek mythology.

[2] More modern works have begun featuring heroines with beastly or terrifying transformations, one prominent example of which is Marceline the Vampire Queen from Adventure Time, who can turn into various demonic forms to help her friends.

[4] Critics have noted that many of the most famous female video game monsters, such as Vicar Amelia from Bloodborne, the Bubble Head Nurses of Silent Hill 2, and Anima from The Evil Within, were formerly humans or take the general shape of one.

The characters use their femininity as a tool in order to draw the player in before showing their true monstrous form, as in Vicar Amelia's transformation from a "little praying woman" into a beast.

While erotic in nature, these games also have a following due to the humanization of these monsters, and serve as a metaphor for the irrelevancy of exterior appearances and the importance of one's own personality to find love and empowerment.