John Wisniski Jr.
Acting
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.
movieMidnight Massacre
as Caepio · 2025 · 0.0
tvBiography: WWE Legends
as Greg "The Hammer" Valentine · 2021 · 7.3
tvWWE's Most Wanted Treasures
as Greg "The Hammer" Valentine · 2021 · 8.6
movieChris Jericho's 30th Anniversary Celebration
as Greg "The Hammer" Valentine · 2020 · 7.0
tvUndertaker: The Last Ride
as Greg Valentine (archive footage) · 2020 · 7.4
tvAll Elite Wrestling: Dynamite
as Greg Valentine · 2019 · 8.0
movie350 Days
as Self · 2019 · 5.1
movieHeadstrong
as Self · 2019 · 6.0
movieWWE: The U.S. Championship: A Legacy of Greatness
as Greg 'The Hammer' Valentine (archive footage) · 2016 · 9.2
movieBehind the Ropes: The Greatest Fraternity in the World
as Himself · 2015 · 0.0
movieAt What Cost? Anatomy of Professional Wrestling
as Himself · 2015 · 10.0
movieWWE: 150 Best Pay-Per-View Matches, Vol 1
as Himself · 2014 · 10.0
movieWWE: Starrcade - The Essential Collection
as Himself · 2012 · 0.0
movieJCW Legends and Icons
as · 2011 · 0.0
movieTimeline: The History of WWE – 1985 – As Told By Greg Valentine
as Himself · 2011 · 0.0
movieWWE: The History Of The Intercontinental Championship
as Himself · 2008 · 7.3
movieWWE: The History Of The WWE Championship
as · 2006 · 10.0
movieThe Greatest Wrestling Stars of the '80s
as Self · 2005 · 7.8
movieWorld Wrestling Legends: 6:05 - The Reunion
as Greg Valentine · 2005 · 0.0
movieWWE Hall of Fame 2004
as Self · 2004 · 8.3
movieHeroes of Wrestling
as Greg "The Hammer" Valentine · 1999 · 1.0
movieWCW World War 3 1997
as Greg "The Hammer" Valentine · 1997 · 7.5
tvAWF Warriors of Wrestling
as Greg "The Hammer" Valentine · 1995 · 0.0
movieWWE Royal Rumble 1994
as Greg "The Hammer" Valentine · 1994 · 7.0