Cain Velasquez and 4 other WWE Superstars whose careers lasted less than 12 months

#1. Muhammad Hassan - One of the biggest missed opportunities for WWE

Muhammad Hassan is a name that still draws interest from WWE fans. For the uninitiated, Hassan was a character played by Marc Copani, an American man of Italian origin.

The highly-controversial gimmick saw him publicly call out and condemn the discriminations faced by Arabic people from Americans, and somehow, he became the biggest heel in the company. There was even a story where he had to face the wrath of the locker room for using the camel clutch, a move invented by Eddie Guerrero's father.

Unfortunately for Hassan, he was embroiled in a locker room which still suffered from having a toxic culture - something that was never publicly acknowledged then.

At the young age of 23-24, Muhammad Hassan was in a prime position to become the top heel of his generation. However, the London Bombings in 2005, as well as WWE portraying him and his henchmen as terrorists led to a lot of trouble and controversy.

The company was pressurized to keep him off TV and at the Great American Bash in 2005, The Undertaker defeated him and wrote him off by launching a brutal assault.

Hassan was sent back to developmental to create a new character, but he was released in September and soon retired from professional wrestling altogether. While nobody had ever confirmed it, there was a belief that Muhammad Hassan was planned to be the man to dethrone Batista in the midst of his epic first World Heavyweight title run.

The end of the Hassan character may have legitimately changed the course of WWE's history.