[quote=SoleAccord]
He also never really killed a villain in DBZ canon. 
[/quote]

Well, if you count Dragonball (which is by far a superior series), I know he at least killed the original King Piccolo. Punched a hole right through his chest. The second Piccolo is generally considered a different character. But yea, considering the length of the franchise, Goku's kill count is pretty low.