Alright, heres a little update! Thanks to zayacSK, I found out what's his name, Bill Clements. But this video is still worth the watch for anyone with freaking excuses for their limitations or simply for anyone who likes a good Bass-drum jam! Bill Clements is definitively an inspiration! Rock on dude!
"Bassist Bill Clements, began playing at the age of 13, inspired by Geddy Lee, Chris Squire, and other prog-rock bass giants. Bill decided early on, one way or another, bass playing would be his path. Forgoing a formal musical education, Bill instead embarked on an intensive program of practice and musical research. Unfortunately, Bill lost his right hand and forearm, December 1989 in an industrial accident. This catastrophic event would seemingly have ended his promising career as a musician. Yet within three months time, Bill was gigging again, and he hasn't stopped since."