Kanzenshuu

Dr Briefs, then Bulma. I don't count Senbei because he isn't really part of Dragonball, hehe.

He's a cyborg.

Nicely done, I had to think about it for a second until I realised it was April Fool's day xD

A few moments spring to mind. When I first watched the trunks saga and after finally battling the mighty Frieza and barely surviving, Trunks comes and kills Frieza and King Cold like it was nothing. When Goku comes back to Earth, we're told that there's a new force coming to threaten the Dragonball ...