Goku Nearly Doomed the Entire Dragon Ball Universe 

While Goku has proven time and again that he is one of the strongest protectors of the Dragon Ball universe 

he also has a bad habit of nearly destroying the very universe he has all but sworn to protect 

including one instance where he nearly doomed all existence with a single sentence. 

Since his introduction in the very first chapter of Dragon Ball, it was immediately clear that Goku was a force to be reckoned with. 

From taking zero damage following a gunshot to the head upon his debut 

to toppling a global fascist regime single-handedly, to killing a literal demon with his bare hands 

Goku proved at an early age that he was the strongest there is–until his world became a bit more cosmic.