Actor
John Wisniski Jr.
75 years · Seattle, Washington, USA · 79 films
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.
Best known for
WrestleMania
1985 · Greg "The Hammer" Valentine
WWE WrestleMania III
1987 · Greg "The Hammer" Valentine
WrestleMania II
1986 · Greg "The Hammer" Valentine
WWE WrestleMania V
1989 · Greg "The Hammer" Valentine
WWE WrestleMania IV
1988 · Greg "The Hammer" Valentine
WWE WrestleMania VII
1991 · Greg "The Hammer" Valentine
Filmography 79
Midnight Massacre
2025 · Caepio
Chris Jericho's 30th Anniversary Celebration
2020 · Greg "The Hammer" Valentine
350 Days
2019 · Self
On Tubi TV
Headstrong
2019 · Self
On fuboTV
WWE: The U.S. Championship: A Legacy of Greatness
2016 · Greg 'The Hammer' Valentine (archive footage)
Behind the Ropes: The Greatest Fraternity in the World
2015 · Himself
At What Cost? Anatomy of Professional Wrestling
2015 · Himself
WWE: Starrcade - The Essential Collection
2012 · Himself
Timeline The History of WWE – 1985 – As Told By Greg Valentine
2011 · Himself
WWE: The History Of The Intercontinental Championship
2008 · Himself
WWE: The History Of The WWE Championship
2006 · Actor
The Greatest Wrestling Stars of the '80s
2005 · Self
WWE Hall of Fame 2004
2004 · Self
Heroes of Wrestling
1999 · Greg "The Hammer" Valentine
WCW World War 3 1997
1997 · Greg "The Hammer" Valentine
WWE Royal Rumble 1994
1994 · Greg "The Hammer" Valentine
WWE Survivor Series 1993
1993 · The Blue Knight
The Immortal Hulk Hogan
1992 · Greg Valentine
WCW Clash of The Champions XX: 20th Anniversary
1992 · Greg "The Hammer" Valentine
WCW Beach Blast
1992 · Greg "The Hammer" Valentine
WCW WrestleWar 1992
1992 · Greg "The Hammer" Valentine
WWE SuperTape: Volume 5
1992 · Greg "The Hammer" Valentine
On Peacock Premium
WWE Royal Rumble 1992
1992 · Greg "The Hammer" Valentine
WWE Rampage '91
1991 · Greg "The Hammer" Valentine