Death Battle2010

Wizard:
[about Goku's Super Saiyan forms] With each transformation, minus full-power Super Saiyan 1, Goku loses some self-control, becoming more violent and instinct-prone. Goku's greatest strength is his tenacity and never-give-up attitude. He does not fight to defeat others. He fights to defeat himself. However, this may also be his greatest weakness.

Boomstick:
He prefers a fair fight, eager to see his opponent's maximum potential.

Wizard:
But, when the whole world is at stake, well... hindsight is 20/20.

Boomstick:
And while he's more than tough enough to survive in a vacuum, he clearly needs oxygen, so no breathing in space.