Alberto Del Rio has been fired by WWE, bringing to an end his five year career in the United States. The reason for his release was described by wwe.com as "unprofessional conduct and an altercation with an employee", which we'll cover in greater detail during the course of this feature. For Alberto though, this was just the latest in a string of controversies that dogged his pro wrestling career. There's been several other incidents involving the Mexican, and he's never proved shy when it comes to using his fists. There's also been problems with his fellow colleagues, tension backstage in the locker room. That's just he kind of guy Alberto is, intense and passionate. He's a genuine hardman who competed in MMA during his younger days, he was never going to be afraid of standing up for himself. Those who crossed him have found out the hard way that he's not to be messed with. If this latest incident brings to an end his career, let's just go on record to say this was one of the best workers of his generation. In the ring he was almost peerless from a technical standpoint. This guy could work, bringing a hard hitting athletic style to his performances. He first found fame in his native Mexico, competing as Dos Caras Jr he became a massive celebrity in his homeland. He eventually got courted by WWE, becoming an instant main eventer in the USA and capturing four World / WWE Championships overall. Here's the aspects of his career he doesn't want you to know about. His ten biggest controversies that he'd rather you forget.