The promotion is the Italian Nu Wrestling Evolution (NWE) operated by Rikishi. Originally an Italian pro wrestling promotion, it's now a European operation with a fairly impressive line-up of former WWE & WCW wrestlers (list courtesy of Wikipedia)
Nu-Wrestling Evolution roster:

Juventud Guerrera
"The Vampire Warrior" Gangrel
Big Vito
Antonio Thomas
Pac
Black Pearl
Chris Mordetzky
Kishi
Domino
Darksoul
Fire Angel
Hade Vansen
Heidenreich
Axel Fury
Joe E Legend
Kraft
Red Devil
Lizard
Morpheus III
Osman
Little Legg
Mark Jindrak
MDogg 20
Orlando Jordan
Kazuchika Okada
Romeo Roselli
Thunder Storm
Ultimo Dragon
Vampiro
Rob Van Dam
The Ultimate Warrior

Destiny Girls
Lisa Fury
Sarah Jones
Annie Social
Courtney Synn
Chanel Ryan
Irene
Amy Weber
Talia Madison
Lorelei

Referees
Mirko
Riccardo Blo
Tony Nadet
Johan Desbarre

Alumni
Big Foot
Nidia
The Flatliner
Scott Steiner
Chuck Palumbo
Johnny Stamboli
Jackie Gayda
Charlie Haas
Low Ki
Big Dave
Bulk
Marty Jannetty
Ron Killings
Ekmo
Christian Cage
Jade
Brian Lawler
Último Guerrero
Buchanan
Billy Kidman
D'Lo Brown
Tonga Kid
Nosawa
"Supreme" Lee Great

Tag teams
UK Pitbulls (Big Dave & Bulk)
FBI (Palumbo & Stamboli)

NWE World Heavyweight Championship

Black Pearl: November 25, 2005 Naples, Italy. Defeated Scott Steiner in a tournament final at Genesis Tour to become the first champion.
Vampiro: December 7, 2006 Prato, Italy. Won the title at Destiny is On... the Ring Tour: Night 7.
Romeo Roselli: December 10, 2006 Palermo, Italy Won the title at Destiny is On... the Ring Tour: Night 10.
Orlando Jordan: April 19, 2008 Madrid, Spain Won the title at USA Pressing Catch Tour: Night 1.
The Ultimate Warrior: June 25, 2008 Barcelona, Spain Won the title at Return of the Warrior. (After he won the title, The Ultimate Warrior immediately vacated it.)

NWE Cruiserweight Championship

Juventud Guerrera: April 19, 2008 Madrid, Spain Defeated MDogg 20, Pac and Super Nova in a four-way ladder match at USA Pressing Catch Tour: Night 1.

NWE Official Website Link (homepage has a video of The Warrior's return to the ring)

Joe E Legend!