When you think untouchable in TNA, alot of names pop up I am sure, many of them aren't even on air on a weekly basis.
Most of the X-Division stars are the true athletes and very under-rated, you have to say Petey Williams right off the top, the guy is in tremendous shape, very athletic, and remembering his Team Canada days, has some decent mic skills. Shelley, man this guy is amazing, he was under-rated from day one. Hell he was the star of TNA's 50 Greatest Moments! He spat out joke after joke. He is a pure athlete, and TNA just never used him for the front line of the X-Division so they are trying him out in the tag race. Lance Hoyt is a heavyweight that is very under-rated, I mean the guy is huge, has the look of a star, and could pull off some crazy stuff, like the coast to coast to Abyss in I think it was a battle royal on iMPACT! Finally, Christopher Daniels and AJ Styles, they would rather push their WWE rejects, before they push their own home grown talent, it's ridiculous. There are some other names, but not as important as the above.