[1] Miller made his World Championship Wrestling (WCW) debut on February 12, 1997, where he worked 3 matches that night for TV tapings.
Initially thought as just a fan who had jumped the railing, the WCW commentators then realized that this was no ordinary man and he was in fact the three-time karate champion Ernest Miller.
As a villain, Miller adopted an arrogant, Muhammad Ali-like trash-talking personality, calling himself "The Greatest" and gloating that he could beat anybody within two minutes, which he often did using his signature kicks.
It was also around this time that Ernest began wearing ruby slippers in the ring and dancing in a James Brown-esque fashion to celebrate his victories.
Miller and Onoo also did comedy duo routines similar to Chris Tucker and Jackie Chan's characters from the film Rush Hour.
The Cat's next opponent would be Buff Bagwell, who became famous by doing an impersonation of Miller with a bald cap and black face paint.
The two met at Road Wild, but this time Onoo's help backfired when he accidentally hit the wrong man with a briefcase, making Miller lose the match.
During the match, Miller dominated three rounds, but at the last one he was attacked by Sanders's partner Shane Douglas, who pulled him out of the ring and made him being counted out.
The former karate champion had to endure many interferences from Major Gunns and Elix Skipper, but although he and Miss Jones kept them at bay, she accidentally knocked the referee out with a misguided kick, which allowed a reluctant Hacksaw Jim Duggan to attack Miller, making him lose.
Ernest turned again to get the commissioner's spot and challenged Sanders for it, but Mike wanted none of it, bringing KroniK as mercenaries to take him down and putting the role on the line only if Miller accepted to give him Miss Jones's services.
Miller's victory was short-lived, as Lance Storm came to reclaim the commissioner role with Ric Flair and his Magnificent Seven's help.
The karate champion then started a feud with Chris Kanyon, who attacked Miss Jones to the point to put her in the hospital.
Miller even gave up his role as commissioner in order to get a shot at Kanyon, chasing him for months and even having a street fight in Jones's hospital room.
After WCW, he kept his Ernest "The Cat" Miller ring name and gimmick, he made his dark match debut for World Wrestling Entertainment on October 28, 2002.
Miller appeared in the 2004 Royal Rumble match, making his entrance (along with manager Lamont) while the other two people in the ring, Chris Benoit and Randy Orton, were knocked down.
to earn a shot at the WWE Championship against then Champion Brock Lesnar at No Way Out, but was once again thrown out during his theme song, this time by Kurt Angle.
Miller had this to say about the WWE and Brodus Clay recycling his music and phrase to Inside the Ropes Radio “I haven't watched it.
Miller came out of retirement on November 28, 2015, at WrestleCade competing in a battle royal won by Ethan Carter III in Winston-Salem, North Carolina.
On December 13, 2019, Miller teamed with former WCW wrestlers; Glacier, Haku and Luther Biggs as they won an 8 tag match for Sunray Pro Wrestling in Orlando, Florida.
He lost to Joey Janela at Game Charger Wrestling/Black Pro Label 4 Cups Stuffed in Hoffman Estates, Illinois on September 2, 2022.
[9] Miller had a significant role in the Academy Award-nominated film The Wrestler[10][11] as The Ayatollah, in-ring nemesis of Randy "The Ram" Robinson (Mickey Rourke).
He played Earnie Shavers opposite Michael Jai White in the 2008 Chinese television series The Legend of Bruce Lee and appeared in the 2009 film Blood and Bone.