He is a member of the most famous club in Windenburg, Paragons, and is in a relationship with its club leader, Siobhan Fyres. He has level 5 charisma skill and is friends with Luna Villareal and Sofia Bjergsen and acquaintances with Joaquin Le Chien, with whom he lives. He works in the Tech Guru career as a Quality Assurance. He and Joaquin's bio demonstrates that they are in no need of money and are more focused on making their home better.
His name Sergio is Spanish and Romeo meaning "a pilgrim to Rome". According to his name Sergio is from Spain, hinting that he possibly is of Spanish descent.