For many Colombians Factor X is not so X, because according to them already it has a name: Julio Caesar Rocks, a young cartagenero of 26 years, that by their magic in the scene and its spark, have become the favorite of the public and Juan Carlos Coronel, its tutor. Its humble origin does not shame it. On the contrary, to have let its studies primary to sell fish and ice creams in beaches to maintain to its family; to have lived in a house on esterilla and until sung in a mariachi to give him to eat to its mother and her daughter, they are its greater incentive to remain with Factor X. From a beginning one gained the attention of the public by its blond melena individual and crespa and of course, by its excellent voice. Its versatility is its better letter. It sings from reggaetón, to ballads and rancheras; it touches the guitar and he is excellent dancer, with no sort "corchan it". His coquetería and their espontaneidad causes that the women consider a "black papasito" as says Marbelle. The evident favoritism on which it counts this cartagenero, for many, can turn upside down in his against, because according to they say, is already created with the "X" in the head.