Actor
John Wisniski Jr.
September 20, 1951 · 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.
Notable work
Often works with
Hulk Hogan
16 titles together
WrestleMania, WWE WrestleMania III, WWE Saturday Night's Main Event
Randy Poffo
11 titles together
WWE WrestleMania III, WWE Saturday Night's Main Event, WrestleMania II
André Roussimoff
10 titles together
WrestleMania, WWE WrestleMania III, WWE Saturday Night's Main Event
Aurelian Smith Jr.
10 titles together
WWE WrestleMania III, WWE Saturday Night's Main Event, WWE WrestleMania V
Michael Hickenbottom
9 titles together
Undertaker: The Last Ride, WWE Saturday Night's Main Event, Biography: WWE Legends
Bret Hart
9 titles together
Undertaker: The Last Ride, WWE WrestleMania III, WWE Saturday Night's Main Event
Full filmography · 84
Midnight Massacre
as Caepio
2025
Chris Jericho's 30th Anniversary Celebration
as Greg "The Hammer" Valentine
2020
WWE: The U.S. Championship: A Legacy of Greatness
as Greg 'The Hammer' Valentine (archive footage)
2016
WWE: The History Of The WWE Championship
cast
2006
Heroes of Wrestling
as Greg "The Hammer" Valentine
1999
WCW World War 3 1997
as Greg "The Hammer" Valentine
1997
WWE Royal Rumble 1994
as Greg "The Hammer" Valentine
1994
WWE Survivor Series 1993
as The Blue Knight
1993
The Immortal Hulk Hogan
as Greg Valentine
1992
WCW Clash of The Champions XX: 20th Anniversary
as Greg "The Hammer" Valentine
1992
WCW Beach Blast
as Greg "The Hammer" Valentine
1992
WCW WrestleWar 1992
as Greg "The Hammer" Valentine
1992