Casa de Leones, also known as Los Leones, were a Puerto Rican reggaeton group. The members of the group are Miguel A. De Jesús (Guelo Star), Jaime Borges and Charlie Carlson (lead singer) and Héctor Padilla (J-King & Maximan), Randy Ortiz and Joel Muñoz (Jowell & Randy). All five members began their music career writing and producing for other artists, establishing them in the world of reggaeton and rap. In 2007, they joined forces and were taken on by the reggaeton producer of Black Lion Records, Carlos “Karly” Rosario & Elías De León.