5. Gohan vs. Cell – Dragon Ball Z
“When you have someone that you want to protect, you’re undefeated.”
Once there, 16 tells Gohan that it is okay to fight if you’re doing it for the right reasons, and to unleash his power.
After he utters his final words, he is crushed by Cell. This is enough to push Gohan over the edge, and to transform into a Super Saiyan 2.
4. Edward Elric vs. Homunculus Greed – Fullmetal Alchesmist/Brotherhood
“Death, is the destiny he choose.”
Greed explains to Edward that the only way to kill a homunculus without its regeneration is to physically murder one near the human remains that it was created with, and he also reveals that he let Al go.
Greed departs this information with Ed in hopes of ensuring the deaths of the rest of the homunculi, and then he dies, much to the shock of Ed who has never killed before.
3. Majin Buu vs. Vegeta – Dragon Ball Z
“Once you were so proud, and finally you learn to love, the world is proud of you.”
Trunks knocks Buu away from his father, and he and Goten free Vegeta from his bonds. Vegeta recovers, and tells Trunks that he is proud of him. For the first time, Vegeta embraces his son. He then knocks out Goten and Trunks, allowing Piccolo to carry them away to safety.
With Buu back and ready for more, Vegeta makes the ultimate sacrifice: he erupts in a blinding flash of light, certainly killing anything near him, including himself. The last pure blood Saiyan is now dead.
2. Goku vs. Frieza – Dragon Ball Z
“King of the universe, welcome to hell!”
It looks like the battle is over, as everyone celebrates, Frieza reappears and spares no time attacking; first he fires a blast at Goku, but Piccolo hurls himself in front of it and takes the blast, knocking him out.
Then Frieza fires another blast and uses it to blow up Krillin, killing him. Fueled by rage at the loss of his best friend, Goku’s power increases exponentially, and he ascends to become a Super Saiyan.
1. Goku vs. King Piccolo – Dragon Ball
“When you have to protect world from Evil”
This is the best time of Dragon ball. When king piccolo saga starts in Dragon Ball, Goku face King Piccolo first time. King Piccolo defeats Goki easily. First After drinking the Ultra Divine Water Goku get new ability and his power level increased. He defeat king piccolo and you notice Goku defeat king piccolo using his head (Dragon Fist attack).