John Wisniski Jr.

9/20/1951 (74 years old)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 titles)

Midnight MassacreMovie

Midnight Massacre

Caepio · 2025

Biography: WWE Legends7.3Show

Biography: WWE Legends

Greg "The Hammer" Valentine · 2021

WWE's Most Wanted Treasures8.6Show

WWE's Most Wanted Treasures

Greg "The Hammer" Valentine · 2021

Chris Jericho's 30th Anniversary Celebration7.0Movie

Chris Jericho's 30th Anniversary Celebration

Greg "The Hammer" Valentine · 2020

Undertaker: The Last Ride7.4Show

Undertaker: The Last Ride

Greg Valentine (archive footage) · 2020

All Elite Wrestling: Dynamite8.0Show

All Elite Wrestling: Dynamite

Greg Valentine · 2019

350 Days5.1Movie

350 Days

Self · 2019

Headstrong6.0Movie

Headstrong

Self · 2019

WWE: The U.S. Championship: A Legacy of Greatness9.2Movie

WWE: The U.S. Championship: A Legacy of Greatness

Greg 'The Hammer' Valentine (archive footage) · 2016

Behind the Ropes: The Greatest Fraternity in the WorldMovie

Behind the Ropes: The Greatest Fraternity in the World

Himself · 2015

At What Cost? Anatomy of Professional Wrestling10.0Movie

At What Cost? Anatomy of Professional Wrestling

Himself · 2015

10.0Movie

WWE: 150 Best Pay-Per-View Matches, Vol 1

Himself · 2014

WWE: Starrcade - The Essential CollectionMovie

WWE: Starrcade - The Essential Collection

Himself · 2012

Movie

JCW Legends and Icons

2011

Timeline The History of WWE – 1985 – As Told By Greg ValentineMovie

Timeline The History of WWE – 1985 – As Told By Greg Valentine

Himself · 2011

WWE: The History Of The Intercontinental Championship7.3Movie

WWE: The History Of The Intercontinental Championship

Himself · 2008

WWE: The History Of The WWE Championship10.0Movie

WWE: The History Of The WWE Championship

2006

The Greatest Wrestling Stars of the '80s7.8Movie

The Greatest Wrestling Stars of the '80s

Self · 2005

Movie

World Wrestling Legends: 6:05 - The Reunion

Greg Valentine · 2005

WWE Hall of Fame 20048.3Movie

WWE Hall of Fame 2004

Self · 2004

Heroes of Wrestling1.0Movie

Heroes of Wrestling

Greg "The Hammer" Valentine · 1999

WCW World War 3 19977.5Movie

WCW World War 3 1997

Greg "The Hammer" Valentine · 1997

Show

AWF Warriors of Wrestling

Greg "The Hammer" Valentine · 1995

WWE Royal Rumble 19947.0Movie

WWE Royal Rumble 1994

Greg "The Hammer" Valentine · 1994

WWE Survivor Series 19937.0Movie

WWE Survivor Series 1993

The Blue Knight · 1993

Raw6.8Show

Raw

Greg "The Hammer" Valentine · 1993

The Immortal Hulk HoganMovie

The Immortal Hulk Hogan

Greg Valentine · 1992

WCW Clash of The Champions XX: 20th AnniversaryMovie

WCW Clash of The Champions XX: 20th Anniversary

Greg "The Hammer" Valentine · 1992

WCW Beach Blast8.0Movie

WCW Beach Blast

Greg "The Hammer" Valentine · 1992

WCW WrestleWar 19926.0Movie

WCW WrestleWar 1992

Greg "The Hammer" Valentine · 1992