#1. Worst - The Great Khali
The Great Khali made his WWE debut in 2006 and he went on to win his first and only World Heavyweight Championship two years later by eliminating Batista and Kane in a 20-Man Battle Royal on SmackDown. Khali successfully defended his title several times before losing it to Batista, ending his reign at only 61 days.
Khali is widely regarded by many as not only one of the worst world champion in WWE but also one of the worst wrestler in the history of the company. He was very stiff in the ring, his legs were his main target and he had a very weird finishing move- the karate chop.
His title defenses were dull just like most of his matches and his title run was a massive disappointment. He wasn't good at almost everything in the ring and his run was lacklustre. Thankfully that was his last run as World Heavyweight Champion.