Ultraman Tiga does not feature any identifiable LGBTQ+ characters or themes. The series' focus remains on its core genre elements of giant monsters, superheroes, and sci-fi action, with no narrative space dedicated to queer identity or experiences.

Based on available information, Ultraman Tiga does not feature any identifiable transsexual characters or themes. The series is a tokusatsu production centered on sci-fi action and monster battles, and its narrative does not explore gender identity or related social themes.

The series primarily focuses on giant hero versus monster combat. While female characters like Rena Yanase and Megumi Iruma are integral to the GUTS team, their action roles are typically as pilots or strategists, utilizing vehicles and firearms. There are no instances of female characters defeating male opponents in close-quarters physical combat.

Ultraman Tiga introduced a new Ultraman and an original human cast for its series. There are no instances of established legacy characters from prior Ultraman installments or other source material having their gender changed in this adaptation.

Ultraman Tiga is a Japanese production featuring Japanese actors portraying characters consistent with the established Japanese origin of the Ultraman franchise. There are no instances of characters being portrayed by actors of a different race than their canonical or implied race.