On 1 November 2012 Peña appeared in his first official game with the main squad, playing the full 90 minutes in a 1–0 home win against Real Betis for the season's Copa del Rey (1–3 aggregate loss).
Rubén Darío | Ruben Studdard | Rubén Sierra | Rubén Blades | Ruben Blades | Rubén Olivares | Rubén Darío Paredes | Rubén Fuentes | Ruben Brown | Rubén Berríos | Roque Sáenz Peña | Marcos Alonso Peña | Federico Peña | Enrique Peña Nieto | Ruben Rausing | Ruben and the Jets | Rubén Amaro, Sr. | Presidencia Roque Sáenz Peña | Pedro Ruben Decima | Michael Peña | Cruising with Ruben & the Jets | Chronicle of San Juan de la Peña | Yamilet Peña | Sáenz Peña | Rubén Zamora | Ruben Vardanian | Rubén Tejada | Rubén Sanz | Ruben Sanz | Ruben Santiago-Hudson |