John Wisniski Jr.
Acting
Born 1951-09-20 · Seattle, Washington, USA
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.
Known for
WWE The Brawl to End it All
1984 · Movie
Wrestling's Most Embarrassing Moments
1987 · Movie
WWE: The History Of The WWE Championship
2006 · Movie
Ricky "The Dragon" Steamboat
1986 · Movie
At What Cost? Anatomy of Professional Wrestling
2015 · Movie
WWE: The U.S. Championship: A Legacy of Greatness
2016 · Movie
WWE Survivor Series 1987
1987 · Movie
Most Unusual Matches
1985 · Movie
WWE Survivor Series 1988
1988 · Movie
WWE Survivor Series 1989
1989 · Movie
WWE The Big Event
1986 · Movie
WWE WrestleMania VII
1991 · Movie
WCW World War 3 1997
1997 · Movie
WrestleMania II
1986 · Movie
WWE WrestleMania III
1987 · Movie
WCW Beach Blast
1992 · Movie
WWE Hall of Fame 2004
2004 · Movie
WWE: The History Of The Intercontinental Championship
2008 · Movie
WWE Survivor Series 1990
1990 · Movie
WWE WrestleMania IV
1988 · Movie
The Greatest Wrestling Stars of the '80s
2005 · Movie
WWE SummerSlam 1991
1991 · Movie
WrestleMania
1985 · Movie
WWE WrestleMania V
1989 · Movie
WWE Royal Rumble 1992
1992 · Movie
WWE Royal Rumble 1991
1991 · Movie
WWE SummerSlam 1989
1989 · Movie
NWA Starrcade 1983
1983 · Movie
WWE Royal Rumble 1994
1994 · Movie
Chris Jericho's 30th Anniversary Celebration
2020 · Movie
WWE Survivor Series 1993
1993 · Movie
WWE Royal Rumble 1990
1990 · Movie
WCW WrestleWar 1992
1992 · Movie
WWE Royal Rumble 1989
1989 · Movie
WWE U.K. Rampage 1991
1991 · Movie
350 Days
2019 · Movie
The British Bulldogs
1986 · Movie
WWE WrestleFest '91
1991 · Movie
Midnight Massacre
2025 · Movie
Heroes of Wrestling
1999 · Movie
WWE Superstars & Stripes Forever: The March to WrestleMania VII
1991 · Movie
WWE: Starrcade - The Essential Collection
2012 · Movie
WWE Rampage '91
1991 · Movie
The Best of the WWF: volume 20
1989 · Movie
WCW Clash of The Champions XX: 20th Anniversary
1992 · Movie
The Best of the WWF: volume 5
1986 · Movie
WWE SuperTape: Volume 5
1992 · Movie
The Best of the WWF: volume 7
1986 · Movie
Demolition: Witness the Power
1989 · Movie
WWE Mega Matches
1991 · Movie
WWF/AJPW/NJPW Wrestling Summit
1990 · Movie
Bob Uecker's Wacky World of Sports
1987 · Movie
Inside the Steel Cage
1986 · Movie
The Best of the WWF: volume 10
1987 · Movie
WWE SuperTape: Volume 2
1990 · Movie
Tag Team Champions
1986 · Movie
WWE Funniest Moments
1991 · Movie
WWE The Ultimate Challenge Special: The March to WrestleMania VI
1990 · Movie
The Best of the WWF: volume 14
1987 · Movie
The Best of the WWF: volume 4
1985 · Movie