#4 Jeff Hardy
It seems neither of the Hardy brothers was immune to being released by WWE. Jeff Hardy immediately began to enjoy significant success after splitting from his brother Matt in 2002. His ladder match with The Undertaker for the WWE Championship is still cited to this day as one of the very best ladder matches of all time and made an overnight singles sensation of the Charasmatic Enigma.
Behind the scenes, however, Hardy was heading in a deep and dark direction which would ultimately prove to be his own undoing. After no-showing events numerours times and backstage reports of erratic behaviour and alleged drug use, Hardy was unceremoneously released from the company -- less than 1 year after his iconic match with Undertaker. This wouldn't be the end of one half of The Hardy Boyz.
After 3 years on the independent circuit, wrestling for promotions like Ring of Honor and more famously, TNA, Hardy would return to WWE and team up again with his brother Matt before embarking on a singles run once again.
In one of the most feel-good wins in WWE history, Hardy would capture the WWE Championship at Armageddon 2008 in a match that saw him defeat both Triple H and Edge.
He would go on to have multiple world title wins but was released again by WWE in 2009, reportedly for similar reasons as his first release in 2003. While he still seems to be struggling with various issues sporadically, there's no question he's one of the most entertaining and talented stars in WWE history, as he continues to come back after trials and tribulations. Much like his brother, the second time he was fired by WWE led to even more success around the world and again in TNA, where he became one of that company's top names before he and Matt returned together at WrestleMania 33.