As a scion of royal blood, Xavier spent his childhood learning how to rule justly. Because he believes that rulers must be brave, Xavier strives to be brave himself. After extensive martial arts training, he became an apprentice to Xander Shakadera and inherited the Bey name Xcalius, eventually joining the Turbo 4. In order to further hone his own skill, Xavier departed on a journey to find a worthy rival.

(Source: Beyblade Wiki)