Nappa: Vegeta! What's his power level?!
Vegeta: It's over 9,000!!!!
Too bad the Nappa cosplay from last year wasn't there to do that with him.
Of course most people know Vegeta from the awesome Dragon Ball Z series. Oh, and in case you didn't know there was recently a JUMP anime special for DBZ. Of course I didn't forget Dragon Ball Kai which from what I understand is more like an abridged version of the series.
Note his scouter, armor, and tail wrapped around his waist. This shows that this is the Vegeta that appears in the Saiyan Saga.