The film promotes general themes of diversity and acceptance among various monster groups. However, there are no identifiable LGBTQ+ characters or explicit themes related to sexual orientation or gender identity present in the narrative.

Monster High: Fright On! does not include any identifiable transsexual characters or themes. The narrative focuses on the acceptance of various monster identities and differences, but does not delve into specific gender identity topics such as transsexuality.

The movie does not contain any action or adventure elements.

The film features established characters from the Monster High franchise, all of whom maintain their canonical genders as depicted in previous installments and source material within the franchise. No characters are portrayed with a different gender than their established identity.

The animated film "Monster High: Fright On!" portrays its characters consistently with their established appearances and implied racial/ethnic backgrounds from the original Monster High franchise canon. No character originally established as one race is depicted as a different race in this installment.