Undertaker as Mean Mark Callous vs Robbie Idol 27-1-90

Undertaker as Mean Mark Callous & Dan Spivey vs. Randy Harris & Agent Steel @ WCW Saturday Night 1 6 90

1990-04-22 NWA Main Event - Handicap - Mean Mark Callous (Undertaker) VS Rick Ryder & Pat Rose

Undertaker as Mean Mark Callous & Dangerous Dan Spivey vs Larry Santo & Rick Ryder 2. January 1990

1990-04-24 NWA World Championship Wrestling - Mean Mark Callous (Undertaker) VS Brian Johnson

Capital Combat '90 - "Return Of RoboCop" - May 19, 1990 - Johnny Ace vs Mean Mark Callous

Undertaker as Mark Callous v Bill Dundee

Jerry Lawler vs Undertaker as Mark Callous

Kerry Von Erich VS Mean Mark Callous

Bill Dundee vs "Mean" Mark Callous

Mean Mark Callous vs Lex Luger

Clash Of The Champions #11 - "Coastal Crush" - June 13, 1990 - Flyin' Brian Pillman vs Mean Mark Callous

Mean Mark (Undertaker) vs Flyin' Brian Pillman

WCW Mean Mark(Undertaker) vs Pillman

The Undertaker (Mean Mark) & Dan Spivey Vs. The Road Warriors - NWA Clash of Champions 06.02.1990

Undertaker in WCW as Mean Mark vs. Lex Luger

USWA Heavyweight Title Tournament Second Round Match - October 20, 1990 - Jerry Lawler vs Mark Callous

Clash Of The Champions #10 - "Texas Shootout" - The Skyscrapers (Dan Spivey & Mark Callous) vs The Road Warriors (Animal & Hawk)

Mean Owne678670-90-90-09-r --VVT

The Undertaker Rollin(Robbie Williams version) Titantron - YouTube

Robbie Williams Didn't Mean to Cause an International Incident at the World Cup - This Morning