John Wisniski Jr.

Known for: Acting

Born: 1951-09-20 (age 74)

From: 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.

Filmography (120)

MOVIE
Midnight Massacre
2025
as Caepio
TV★ 7.3
Biography: WWE Legends
2021
as Greg "The Hammer" Valentine
TV★ 8.6
WWE's Most Wanted Treasures
2021
as Greg "The Hammer" Valentine
MOVIE★ 7.0
Chris Jericho's 30th Anniversary Celebration
2020
as Greg "The Hammer" Valentine
TV★ 7.4
Undertaker: The Last Ride
2020
as Greg Valentine (archive footage)
TV★ 8.0
All Elite Wrestling: Dynamite
2019
as Greg Valentine
MOVIE★ 5.1
350 Days
2019
as Self
MOVIE★ 6.0
Headstrong
2019
as Self
MOVIE★ 9.2
WWE: The U.S. Championship: A Legacy of Greatness
2016
as Greg 'The Hammer' Valentine (archive footage)
MOVIE
Behind the Ropes: The Greatest Fraternity in the World
2015
as Himself
MOVIE★ 10.0
At What Cost? Anatomy of Professional Wrestling
2015
as Himself
MOVIE★ 10.0
WWE: 150 Best Pay-Per-View Matches, Vol 1
2014
as Himself
MOVIE
WWE: Starrcade - The Essential Collection
2012
as Himself
MOVIE
JCW Legends and Icons
2011
MOVIE
Timeline The History of WWE – 1985 – As Told By Greg Valentine
2011
as Himself
MOVIE★ 7.3
WWE: The History Of The Intercontinental Championship
2008
as Himself
MOVIE★ 10.0
WWE: The History Of The WWE Championship
2006
MOVIE★ 7.8
The Greatest Wrestling Stars of the '80s
2005
as Self
MOVIE
World Wrestling Legends: 6:05 - The Reunion
2005
as Greg Valentine
MOVIE★ 8.3
WWE Hall of Fame 2004
2004
as Self
MOVIE★ 1.0
Heroes of Wrestling
1999
as Greg "The Hammer" Valentine
MOVIE★ 7.5
WCW World War 3 1997
1997
as Greg "The Hammer" Valentine
TV
AWF Warriors of Wrestling
1995
as Greg "The Hammer" Valentine
MOVIE★ 7.0
WWE Royal Rumble 1994
1994
as Greg "The Hammer" Valentine
MOVIE★ 7.0
WWE Survivor Series 1993
1993
as The Blue Knight
TV★ 6.8
Raw
1993
as Greg "The Hammer" Valentine
MOVIE
The Immortal Hulk Hogan
1992
as Greg Valentine
MOVIE
WCW Clash of The Champions XX: 20th Anniversary
1992
as Greg "The Hammer" Valentine
MOVIE★ 8.0
WCW Beach Blast
1992
as Greg "The Hammer" Valentine
MOVIE★ 6.0
WCW WrestleWar 1992
1992
as Greg "The Hammer" Valentine
MOVIE
WWE SuperTape: Volume 5
1992
as Greg "The Hammer" Valentine
MOVIE★ 6.9
WWE Royal Rumble 1992
1992
as Greg "The Hammer" Valentine
MOVIE
WWE Rampage '91
1991
as Greg "The Hammer" Valentine
MOVIE★ 7.7
WWE SummerSlam 1991
1991
as Greg "The Hammer" Valentine
MOVIE
WWE WrestleFest '91
1991
as Greg "The Hammer" Valentine
MOVIE★ 6.0
WWE U.K. Rampage 1991
1991
as Greg "The Hammer" Valentine
MOVIE
WWE Mega Matches
1991
as Greg "The Hammer" Valentine
MOVIE★ 7.3
WWE WrestleMania VII
1991
as Greg "The Hammer" Valentine
MOVIE
WWE Superstars & Stripes Forever: The March to WrestleMania VII
1991
as Greg "The Hammer" Valentine
MOVIE
WWE Funniest Moments
1991
as Greg "The Hammer" Valentine
MOVIE★ 7.1
WWE Royal Rumble 1991
1991
as Greg "The Hammer" Valentine
MOVIE★ 7.7
WWE Survivor Series 1990
1990
as Greg "The Hammer" Valentine
MOVIE
WWE Hottest Matches
1990
as Greg "The Hammer" Valentine
MOVIE
Battle of the WWE Superstars
1990
as Greg Valentine
MOVIE
WWE SuperTape: Volume 2
1990
as Greg "The Hammer" Valentine
MOVIE
WWF/AJPW/NJPW Wrestling Summit
1990
MOVIE
WWE The Ultimate Challenge Special: The March to WrestleMania VI
1990
as Greg "The Hammer" Valentine
MOVIE
Wrestling Superheroes
1990
as Greg "The Hammer" Valentine
MOVIE★ 6.1
WWE Royal Rumble 1990
1990
as Greg "The Hammer" Valentine
MOVIE★ 7.8
WWE Survivor Series 1989
1989
as Greg "The Hammer" Valentine
MOVIE★ 6.7
WWE SummerSlam 1989
1989
as Greg Valentine
MOVIE
Demolition: Witness the Power
1989
as Greg "The Hammer" Valentine
MOVIE
Fan Favorites
1989
as Greg Valentine
MOVIE
The Best of the WWF: volume 20
1989
as Greg "The Hammer" Valentine
MOVIE
The Ultimate Warrior
1989
as Greg "The Hammer" Valentine
MOVIE
WWE Wrestling at The Meadowlands: May '89
1989
as Greg "The Hammer" Valentine
MOVIE
WWE Maple Leaf Wrestling: April '89
1989
as Greg "The Hammer" Valentine
MOVIE★ 7.3
WWE WrestleMania V
1989
as Greg "The Hammer" Valentine
MOVIE
WWE Los Angeles Wrestling: January '89
1989
as Greg "The Hammer" Valentine
MOVIE★ 5.8
WWE Royal Rumble 1989
1989
as Greg "The Hammer" Valentine
MOVIE
WWE Los Angeles Wrestling: December '88
1988
as Greg "The Hammer" Valentine
MOVIE★ 8.2
WWE Survivor Series 1988
1988
as Greg "The Hammer" Valentine
MOVIE
Macho Madness
1988
as Greg "The Hammer" Valentine
MOVIE
WWE U.K. Rampage 1988
1988
as Greg "The Hammer" Valentine
MOVIE
WWE Wrestling at The Meadowlands: September '88
1988
as Greg "The Hammer" Valentine
MOVIE
The Best of the WWF: volume 16 Around the World
1988
as Greg "The Hammer" Valentine
MOVIE
WWE Maple Leaf Wrestling: July '88
1988
as Greg "The Hammer" Valentine
MOVIE
WWE Maple Leaf Wrestling: April '88
1988
as Greg "The Hammer" Valentine
MOVIE★ 7.3
WWE WrestleMania IV
1988
as Greg "The Hammer" Valentine
TV
Clash of the Champions
1988
as Greg "The Hammer" Valentine
MOVIE
Brutus "The Barber" Beefcake
1988
as Greg "The Hammer" Valentine
MOVIE
The Best of the WWF: volume 14
1987
as Greg "The Hammer" Valentine
MOVIE★ 10.0
Wrestling's Most Embarrassing Moments
1987
as Greg "The Hammer" Valentine
MOVIE
WWE Houston Wrestling: December '87
1987
as Greg "The Hammer" Valentine
MOVIE★ 8.4
WWE Survivor Series 1987
1987
as Greg Valentine
MOVIE
WWE Houston Wrestling: October '87
1987
as Greg "The Hammer" Valentine
MOVIE
WWE Maple Leaf Wrestling: June '87
1987
as Greg "The Hammer" Valentine
MOVIE
The Best of the WWF: volume 11
1987
as Greg "The Hammer" Valentine
MOVIE★ 7.4
WWE WrestleMania III
1987
as Greg "The Hammer" Valentine
MOVIE
The Best of the WWF: volume 10
1987
as Greg "The Hammer" Valentine
MOVIE
WWE Maple Leaf Wrestling: January '87
1987
as Greg "The Hammer" Valentine
MOVIE
WWE Wrestling at The Meadowlands: January '87
1987
as Greg "The Hammer" Valentine
MOVIE
Bob Uecker's Wacky World of Sports
1987
as Greg "The Hammer" Valentine
MOVIE
Inside the Steel Cage
1986
as Greg "The Hammer" Valentine
MOVIE
WWE Houston Wrestling: October '86
1986
as Greg "The Hammer" Valentine
MOVIE★ 4.0
The British Bulldogs
1986
as Greg Valentine
MOVIE
The Best of the WWF: volume 9
1986
as Greg "The Hammer" Valentine
TV★ 6.8
WWF Wrestling Challenge
1986
as Greg Valentine
TV★ 8.2
WWF Superstars
1986
as Greg "The Hammer" Valentine
MOVIE★ 8.0
WWE The Big Event
1986
as Greg "The Hammer" Valentine
MOVIE
The Best of the WWF: volume 7
1986
as Greg "The Hammer" Valentine
MOVIE★ 10.0
Ricky "The Dragon" Steamboat
1986
as Greg "The Hammer" Valentine
MOVIE★ 6.4
WrestleMania II
1986
as Greg "The Hammer" Valentine
MOVIE
WWE Grudge Match
1986
as Greg "The Hammer" Valentine
MOVIE
Tag Team Champions
1986
as Greg Valentine
MOVIE
The Best of the WWF: volume 5
1986
as Greg "The Hammer" Valentine
MOVIE
The WWF's Amazing Managers
1985
as Greg 'The Hammer' Valentine
MOVIE
WWE Maple Leaf Wrestling: December '85
1985
as Greg "The Hammer" Valentine
MOVIE
WWE Maple Leaf Wrestling: October '85
1985
as Greg "The Hammer" Valentine
MOVIE
WWE Maple Leaf Wrestling: September '85
1985
as Greg "The Hammer" Valentine
MOVIE
The Best of the WWF: volume 4
1985
as Greg "The Hammer" Valentine
TV★ 8.4
WWE Saturday Night's Main Event
1985
as Greg Valentine
MOVIE
WWE Maple Leaf Wrestling: April '85
1985
as Greg "The Hammer" Valentine
MOVIE★ 6.7
WrestleMania
1985
as Greg "The Hammer" Valentine
TV
WWE Pay Per View
1985
MOVIE★ 9.0
Most Unusual Matches
1985
as Greg "The Hammer" Valentine
MOVIE
WWF Hulkamania 1
1985
as Greg Valentine
MOVIE
WWE Maple Leaf Wrestling: October '84
1984
as Greg "The Hammer" Valentine
MOVIE
WWE Maple Leaf Wrestling: September '84
1984
as Greg "The Hammer" Valentine
MOVIE★ 10.0
WWE The Brawl to End it All
1984
as Greg "The Hammer" Valentine
TV★ 9.0
Tuesday Night Titans
1984
as Greg "The Hammer" Valentine
MOVIE
NWA Boogie Jam
1984
as Greg Valentine
MOVIE★ 7.2
NWA Starrcade 1983
1983
as Greg "The Hammer" Valentine
TV
WCW Arena Shows
1983
as Greg Valentine
MOVIE
NWA The Race to Starrcade
1983
as Greg Valentine
MOVIE
NWA The Final Conflict
1983
as Greg Valentine
MOVIE
NWA Sam Muchnick Retirement Show
1982
as Greg Valentine
TV
Mid-Atlantic Championship Wrestling
1981
as Greg Valentine
TV
WWF All-Star Wrestling
1975
as Greg Valentine
TV
WWE Old School
1973
as Greg Valentine