Vega's backstory supplies that he is born to a noble family in Catalonia, Spain. As he matures, Vega studies bullfighting, a cultural tradition among the nobles. Afterward, he goes to Japan and learns Ninjutsu, a style he believes meshes well with his natural grace and agility. Returning home, Vega combines bullfighting with Ninjutsu and goes into an underground cage fighting circuit, where he quickly becomes one of the best.