Who is the masked man in WWE?

Answer 1

If you mean of the Straight Edge Society, it turned out it was Joey Mercury after Big Show finally revealed his identity by pulling off his mask on the July 23rd 2010 Edition of Friday Night Smackdown.

Joey Mercury is best known for his time teaming in the former heel group MNM from 2004-2007 ; including himself (Joey Mercury, currently appearing on WWE's Smackdown brand, as heel in the SES), Johnny Nitro (now known John Morrison, as face, who is currently appearing on WWE's Raw brand), and Melina (Who also currently preforms on WWE's Raw Brand, as face).

In a fatal-four way Ladder Match at December's Armageddon event in 2006, involving Paul London & Brian Kendrek, The Hardyz Matt & Jeff, Nitro & Mercury, and Dave Taylor & William Regal, Mercury suffered a legitimate injury when he was struck in the face with a ladder, breaking his nose. He immediately left the match and was rushed to an emergency room where he received five stitches to the inside of his nose and fifteen to the outside. As a result, Nitro continued the match on his own.

After MNM's feud with The Hardyz ended, Mercury wrestled in singles competition on WWE's Smackdown brand until he was released from his WWE contract on March 26, 2007.

After Wrestling in the independent circuit and ROH (Ring of Honor) from 07-08, Mercury announced his retirement from pro-wrestling due to injuries.

Only to come out of retirement to make his Pro-Wrestling Return in WWE, in a dark match with Shelton Benjamin April 20th at a Smackdown Taping. On April 25th, at WWE's Extreme Rules 2010 PPV was the start of his new gimmick in the SES, interfering in SES leader CM Punk's match against Rey Mysterio helping him pick up the win.