Wrestlemania 31 is taking place tonight and as hard as it may be to believe, Mark Calaway, a.k.a. The Undertaker, will still be competing in a match in spite of officially turning 50 years old a few days ago. Here’s an interesting piece of history featuring the future Undertaker. In 1989, he competed in Memphis as “The Master of Pain” and in this clip, he becomes embroiled in a feud with a masked wrestler named Lord Humongous, who, of course, is based off the villain from The Road Warrior. Believe it or not, the man under the Lord Humongous mask is the wrestler who would eventually become Sycho Sid and wrestle The Undertaker for the WWF title in the main event of Wrestlemania 13.