Progressive elements appear through casting and subplots rather than driving the premise: the established gay couple Mauri and Fernando (Luis Merlo and Adrià Collado) marry in a storyline that normalizes same-sex relationships, while season 5 specifically introduces the new recurring character Raquel (Elena Lombao), Mamen's transgender sister (born Raúl), who dates Emilio and deals with identity, surgery desires, legal name issues, and community prejudice including jokes about her anatomy. Creators explicitly aimed to depict 'all types of families possible' and added the trans character following Spain's 2005 gender identity law.

These elements influence character arcs and episodes but remain secondary to the ensemble comedy format. Audience reception was strong overall, though conservative groups like Hazte Oír criticized the gay content as anti-family. No race or gender swaps of prior characters occur, and diversity stays incidental to the core neighbor farce.