Alien: Romulus does not feature any explicit transsexual characters or direct trans themes. While it explores metaphorical themes of bodily autonomy and reproductive horror, these are not specifically linked to trans identities or experiences within the narrative, resulting in no identifiable trans depiction.

The movie does not contain any action or adventure elements.

The film introduces a new generation of original characters, including female leads Rain Carradine, Kay, and Aileen Wu. There is no indication that any character was previously established as a different gender in prior Alien franchise canon.

The film features a diverse cast with new characters, including actors of various racial backgrounds. However, the provided information does not indicate that any character previously established in the Alien franchise as a specific race has been recast with an actor of a different race.