#7 Goldust

The Gimmick in a Nutshell: An Academy Award statuette (also called an Oscar) came to life.
When you're the son of a famous pro wrestler, it can be hard to stand out on your own. Inevitably, you will be standing in your parent's shadow and will be constantly compared to them in every way.
This problem is even worse if your father is perhaps one of the most famous wrestlers of all time, The American Dream Dusty Rhodes. And let's face facts; Dustin Runnels looks a LOT like his father Dusty, though he was always in better shape.
In order to blaze his own trail, Dustin came up with the Goldust character. At first, he was uncomfortably homophobic but eventually transitioned into...well, into Goldust, a man who utterly defies description.
Why the gimmick managed to work: Quite frankly, there's no other wrestler who quite looks, speaks, or acts like Goldust. A completely original character is rare in wrestling, and it has propelled Dustin Runnels to a thirty-year career.
A gimmick that has stood the test of time and given the WWE universe plenty of comedic relief over the years.