Booker T, inaugural TNA Legends Champion
The title was introduced during a storyline that pitted young talent within the company against veterans of professional wrestling. In the weeks leading up to the unveiling of the physical belt, Booker T carried around a steel briefcase. On the October 23, 2008, episode of Impact!, Booker T introduced the belt by removing it from the briefcase, announcing its name as the "TNA Legends Championship", and declaring himself the first champion. He went on to state that the championship was his and that he would defend it when he saw fit; this meant that the championship was unsanctioned by TNA in the storyline.
On March 15, 2009, at TNA's Destination X pay-per-view (PPV) event, A.J. Styles defeated Booker T to win the championship. Afterwards on the March 19, 2009, episode of Impact!, Styles was credited as becoming the first-ever TNA Grand Slam Champion, by winning the World Heavyweight (NWA or TNA), the World Tag Team (NWA or TNA), the TNA X Division Championship, and the Legends Championship. TNA Management Director Jim Cornette then announced that the TNA Legends Championship had become an official TNA sanctioned championship thanks to Styles defeating Booker T for it legally via the contract the two had signed to make the match official.
On the October 29, 2009, episode of Impact!, then-champion Eric Young renamed the title the "TNA Global Championship". He went on to declare that he was not going to defend it against any American wrestlers nor on American soil. However, Young's first defense was on the December 10, 2009, episode of Impact! in Orlando, Florida against Japanese female wrestler Hamada. Young's second, third and fourth defenses lived up to his earlier decree, when he defended against Suicide in Glasgow, Hamada in Bournemouth, and unsuccessfully against Welsh wrestler Rob Terry in Cardiff, Wales at a live event on January 27, 2010. On the July 22, 2010, episode of Impact!, Terry lost the Global Championship to A.J. Styles. Styles then renamed the title the "TNA Television Championship" on the July 29, 2010, episode of Impact!.
On the April 19, 2012, episode of the newly titled Impact Wrestling, TNA General Manager Hulk Hogan ordered that the TNA Television Championship had to be defended every week. The weekly title defenses lasted until the June 21, 2012, episode of Impact Wrestling.
Abyss was the longest reigning champion
On July 3, 2014, TNA Executive Director Kurt Angle declared the championship inactive. The title was reactivated on June 25, 2015, by TNA under the new name of the "TNA King of the Mountain Championship." TNA announced that a new champion would be determined in a King of the Mountain match at their Slammiversary PPV event on June 28. Jeff Jarrett defeated Matt Hardy, Eric Young, Drew Galloway, and Bobby Roode to win the championship. The title ended up appearing in GFW at a July 9 live event where Young attacked Jarrett and stole the championship belt.
During the August 18, 2016, taping of Impact Wrestling, it was announced that the King of the Mountain Championship was vacated, deactivated and retired with announcement of a new title, the Impact Grand Championship.