John Wisniski Jr.
Biography
John Wisniski, Jr. is an American professional wrestler, better known as Greg "The Hammer" Valentine. He is the son of wrestler Johnny Valentine. In the course of his career, which has spanned over four decades, Valentine has held more than 40 championships, including the NWA United States Heavyweight Championship and the WWE Intercontinental Championship. An alumnus of WWE and World Championship Wrestling, he was inducted to the WWE Hall of Fame in 2004.
Filmography
Midnight Massacre
2025
as Caepio
Chris Jericho's 30th Anniversary Celebration
2020
as Greg "The Hammer" Valentine
350 Days
2019
as Self
Headstrong
2019
as Self
WWE: The U.S. Championship: A Legacy of Greatness
2016
as Greg 'The Hammer' Valentine (archive footage)
Behind the Ropes: The Greatest Fraternity in the World
2015
as Himself
At What Cost? Anatomy of Professional Wrestling
2015
as Himself
- No poster
WWE: 150 Best Pay-Per-View Matches, Vol 1
2014
as Himself
WWE: Starrcade - The Essential Collection
2012
as Himself
- No poster
JCW Legends and Icons
2011
Timeline The History of WWE – 1985 – As Told By Greg Valentine
2011
as Himself
WWE: The History Of The Intercontinental Championship
2008
as Himself
WWE: The History Of The WWE Championship
2006
The Greatest Wrestling Stars of the '80s
2005
as Self
- No poster
World Wrestling Legends: 6:05 - The Reunion
2005
as Greg Valentine
WWE Hall of Fame 2004
2004
as Self
Heroes of Wrestling
1999
as Greg "The Hammer" Valentine
WCW World War 3 1997
1997
as Greg "The Hammer" Valentine
WWE Royal Rumble 1994
1994
as Greg "The Hammer" Valentine
WWE Survivor Series 1993
1993
as The Blue Knight
The Immortal Hulk Hogan
1992
as Greg Valentine
WCW Clash of The Champions XX: 20th Anniversary
1992
as Greg "The Hammer" Valentine
WCW Beach Blast
1992
as Greg "The Hammer" Valentine
WCW WrestleWar 1992
1992
as Greg "The Hammer" Valentine