'Great Human Being, Everyone Loved Him'

"Shad was one of those guys that everybody loved."

That's Triple H telling TMZ Sports why the death of former WWE superstar Shad Gaspard is such a huge loss ... explaining, "He was just a great human being."

Of course, Shad began his relationship with WWE in 2002 when he tried out for the "Tough Enough 2" reality show.

He busted his ass and earned a WWE contract in 2005 -- eventually making the big stage in early 2006.

He ultimately parted ways with WWE in 2010 but Triple H says they had a good relationship ... and even chatted just a few months ago.

"Just the greatest guy," Triple H said ... "So nice."

The WWE exec also said the fact he died while trying to save his 10-year-old son "tells you…