Dwellers are strictly binary male/female; romance and reproduction occur exclusively through heterosexual pairing in Living Quarters, where only male-female couples flirt, dance, and produce babies, with pregnant females unable to fight or explore. This traditional setup has drawn criticism from some outlets for enforcing heteronormativity and reproduction, but it reflects classic simulation tropes rather than activist framing.

Character customization via the Barbershop alters hairstyles, faces, and outfits (some gender-specific), with no pronoun selection, body-type sliders, or gender-fluid options. Dwellers display varied skin tones as incidental background diversity in the post-apocalyptic setting, with no race-swapping of established characters or identity-focused subplots.