Death Battle2010

Wizard:
Kakarot was born to a low-class Saiyan warrior on the planet Vegeta. He narrowly escaped the extinction of his entire race when he was sent to Earth with a single, simple mission...

Boomstick:
Destroy everything! Then he conveniently bumped his head and forgot about it all.

Wizard:
Dubbed Goku by his adopted grandfather, his life revolves around combat. He cares little for anything else, unless food is involved.

Boomstick:
At 12 years old, he was trained by Master Roshi in Kame-Sennin Ryu, which pushes a person to superhuman levels.

Wizard:
Complementing his Saiyan biology, Goku's superhuman strength, speed and senses skyrocketed. He developed numerous fighting techniques including the fast-moving After-Image and the Dragonthrow, his trademark grapple.

Boomstick:
At fifteen, he was already so powerful that the only worthy teachers left were gods... and a talking cat, but mostly GODS! He was only a kid and already, his power level was already enormous!

Vegeta:
It's over 9,000!

Boomstick:
Not yet! [video fast-forwards through the Dragon Ball Z series] Okay, now it is.

Wizard:
FALSE! In the Japanese manga, Goku's power level at that time was 8,000. But it doesn't even matter because power levels are absurd. The entire point of introducing them was to show how unreliable and meaningless they were. By relying on power levels, the villains constantly underestimated the heroes. Therefore, using them to judge Goku's abilities is pointless. Besides, the Daizenshuu says that...

Boomstick:
Dai-what now?

Wizard:
The Official Dragonball Encyclopedia. It states power levels eventually become immeasurable, not because they are so high they can't be measured, but because the characters, and hopefully the audience, have realized just how futile these numbers are. We cannot judge Goku by his power level, nor can we through power scaling, the theory that he can achieve the same feats as lesser Dragonball characters. Goku's abilities are tailored to his personal training and experiences, not to mention anatomy.

Boomstick:
However, Goku does have a knack for mimicking ki techniques.

Wizard:
Ki is metaphysical, made up of things such as vigor, courage and being in one's true mind.

Boomstick:
It's basically a kind of natural life force energy and is a fundamental component of Daoist medicine and martial arts. Oh, and uh, it's NOT magic!

Wizard:
Dragonball creates a very distinct difference between ki and magic. Ki is dependent on the physical ability of the user and magic-users like Babidi are clearly using something different. Goku harnesses and manipulates his ki energy...

Boomstick:
Into badass lasers and stuff, like ki blasts, energy barriers and the Destructo Disc, which he totally stole from Krillin. The Solar Flare blinds opponents and the Spirit Bomb puts energy from other things into a giant death ball... that takes freaking forever to make.

Wizard:
And energy taken from sentient beings must be voluntary. The Spirit Bomb is fueled by positive energy which is only effective against those filled with negative energy, AKA evil. In the Super Android 13 film, Goku actually absorbs the ki gathered from the Spirit Bomb, becoming one with it, transforming and manipulating the energy himself.

Boomstick:
But his two best moves are the Dragon Fist, where he super-charges his punch with a golden ki dragon and the one and only Kamehameha: a giant focused beam which every kid in the world has always wanted to do. Don't lie, you've tried it.

Wizard:
Goku also uses ki for telekinesis and high-speed flight. He can even sense the power and location of other ki sources and then teleport directly to them with Instant Transmission.

Boomstick:
Which is light speed!

Goku:
You dematerialize and travel as a mass of light.

Wizard:
Again, FALSE! This is another mistake in translation. According to the original manga, "Instant Transmission is... well... instant." Its only flaw is that it requires concentrated focus. Also, he can read minds.

Boomstick:
Wait, what? Is there no limit to this ki thing?

Wizard:
There is. Goku draws from a finite pool of ki energy. So to increase his power, Goku perfected the art of Kaio-Ken. This amplifies Goku's ki, multiplying his strength, speed, defense and so on.

Boomstick:
Only one problem: it puts a giant strain on body and can even kill him.