#6 Samoa Joe's trainer was none other than NXT's own William Regal

Like many pro wrestlers, William Regal often supplemented his income by training prospective grapplers on the finer points of pro wrestling.
Many people might be surprised to learn that one of William Regal's students was none other than Samoa Joe.
Regal worked for Ultimate Pro Wrestling as both a trainer and an in-ring talent. During his tenure with Ultimate Pro Wrestling, William Regal oversaw the burgeoning career of the promising Samoa Joe. Regal has always been known for being one of the 'stiffer' competitors. This means that his submission holds are snugger, his blows a little harder, and that being tough is tantamount to being a pro wrestler.
Fortunately, we all know how tough Samoa Joe is, and he easily passed muster in William Regal's eyes. What a reunion it must have been when Joe joined NXT in 2015!