Sergio is a son of Paul Romeo and Katherine West, both from the Vintage Glamour Stuff pack trailer, who can be downloaded from gallery under MaxisCreator´s account. He is also a member of the most famous club in Windenburg, Paragons, and is in a relationship with its club leader, Siobhan Fyres. He is friends with the other club members, Luna Villareal and Sofia Bjergsen, as well as acquaintances with Joaquin Le Chien, with whom he lives. He has level 5 charisma skill and works in the Tech Guru career as a Quality Assurance. Joaquin' and him are in no need of money and they are focused on improving their home.
His name Sergio is Spanish or Italian and Romeo is derived from Latin meaning "pilgrim to Rome". According to this he is possibly of Spanish or Italian descent.