Smasher:Bringer of Death
From SmashWiki, the Super Smash Bros. wiki
Bringer of Death was a widely-known Yoshi professional, living in Perth, Western Australia. He was one of the earliest Yoshi players to ever be able to make an impact in tournaments with the character, along with Fumi.
He has won Ozhadou Nationals 5 and Comrads 1, of which he defeated CAOTIC (albeit with Fox, rather than his trademark Yoshi). He also defeated Captain Jack once, but the win was unfortunately not recorded.