#10 Sean O'Haire
Sean O'Haire is best remembered for his time in WCW and WWE in the early 2000s. He began his professional wrestling career in WCW where he had a good run, but this was at the tail end of WCW's existence as it had become clear that WWE was going to be the promotion to win the Monday Night Wars.
Eventually, that's exactly what happened and alongside Chuck Palumbo, O'Haire made his WWF debut in 2001. They had a mixed run in The Alliance, and O'Haire was sent to OVW. He would return to WWE in 2003, where he played the character of a devil's advocate, advising people to do the wrong things with their lives. He even got to work together with Piper for a while, but after being involved in a motorbike accident, he was sent to OVW again, and the following year they parted ways. He would have a career in NJPW and the Independent Circuit, but it was not long before O'Haire retired and tried his hand at MMA.
He fought several times in different promotions, including a PRIDE fight against Butterbean that he lost. He had quite a few other fights on very small shows of which there is no record.
O'Haire had issues in his life and had troubles with the law multiple times over assault and domestic abuse. His life is somewhat of a tragedy, as he would take his own life. He was discovered by his own father, hanging from a bedpost in their home in 2014. He had apparently been suffering from depression and had been to WWE sponsored rehab on multiple occasions.
Record: 4-2