"There are some very good ones out there...and I think he's probably enjoying all if it where he is," Velvet, who displays his collection of Elvis nick-nacks at the Imperial Palace Hotel and Casino, said.
Velvet said the real Elvis was a "practical joker." "He loved to have fun. He was a big kid and ...terribly generous to a fault. He was just brilliant," Velvet said.
Of course, Elvis was distinctive -- a trait which impersonators take to heart.
"You don't have to be that good to be an Elvis impersonator," said a blackjack dealer Elvis, who's had the gig for over 30 years. "You put on one of these jumpsuits and a wig and sunglasses and you're there."
For more than six decades, Elvis has been a rock and roll icon. But why does the King have such a cult following?
"I think because he was an original," said Clinton. "He was a rebel. He was different from everybody else."
More than 30 years after his death and on the eve of Elvis' 75th birthday, a new generation is still being introduced to the King. And while a lot of that has to do with his music, impersonators are also to thank for keeping his legacy alive.
"If you think about it, he is the embodiment of America," said Vallee. "He served his country, he loved his mother, he was a good person besides him being a fantastic entertainer…He was just a phenomenon. There was nobody like him."