Marine Boy is a 1960s Japanese animated children's adventure series centered on the titular character's underwater exploits and battles against villains. The show's narrative and character development do not include any discernible LGBTQ+ characters or themes.

The animated series 'Marine Boy' (1966) focuses on underwater adventures and sci-fi elements. There are no identifiable transsexual characters or themes present in the show, resulting in no depiction of transgender identity or related issues.

The animated series 'Marine Boy' primarily focuses on its male protagonist's underwater adventures and conflicts. The most prominent female character, Neptina, a mermaid, assists the protagonist but does not engage in or win direct physical combat against male opponents.

The 1966 animated series "Marine Boy" is the original production for its characters. There is no prior source material or established canon where its main characters were depicted with different genders before this show's creation.

Marine Boy is a Japanese anime series from 1966. The characters are consistently depicted as East Asian in their original Japanese version and the subsequent English adaptation. There is no evidence of a character established as one race being portrayed as a different race.