Mega Saiyan

The Perfect Saiyan form, Mega Saiyan is achieved after reaching the goal of SSJ God. After reaching SSJ God it is easier to power up to Mega Saiyan then it is to repower up to SSJ god and it has extreme power. Goku was the first to achieve this goal.

The power is so extreme that it can rip the universe apart if the user cannot control the immortal energy within there bodies. While they are in this form, they are almost completely immortal and have no chance of being defeaten easily.

The hair of the saiyan turns a lightning blue and intense red electric rage shocks circle the saiyan and then the saiyans eyes turn completely blue.

Power Level of a Mega Saiyan: 800,000,000,000

During his fight with Immortal Frieza, goku unleashes a power that can destroy a being even though it is immortal. That power showed 3/4 of the Mega Saiyan's potential.

Mega Saiyan is first seen in the Immortal Frieza Saga.

Immortal Frieza Saga:

Frieza escapes hell with the help of a stranger that entered hell looking for him. Frieza then disguises himself and lower's his power level to look like a human. Over a few months he comes across all dragonballs and grants his wish of immortality.

As soon as his wish came true he unleashed his full new power and with it, located Dende and Mr Popo. Frieza then tried killing them before Vegetashowed up and battled frieza.

Goku arrived later on and used his Super Saiyan 3 job because he knew it would be enough to kill frieza but frieza would simply not die. Frieza then transformed into his immortal form which now made him impossible to beat. With Goku knocked out and the planet in danger from Frieza. Frieza plans to exterminate all living life forms in the planet after he has located all the dragon balls once again.

Goku recovers from his beatdown by frieza and hunts frieza down again. Once Goku found Frieza, they had a long hard battle till Goku had the energy to transform to Mega Saiyan in which he reversed the Immortality form of frieza using his hand and pummeled frieza until he was killed.

Immortal Frieza Power Level: 26,000,000,000

Goku SSJ3 Power Level (during that saga): 12,000,000,000

Goku Mega Saiyan Power Level (during that saga): 1,000,000,000,000

Battle with Elder God Shain:

Shain Power Level: 1,200,000,000,000

Mega Saiyan Goku: 1,150,000,000,000

Mega Saiyan 2 Goku: 1,000,000,000,000,000,000,000

Mega Saiyan 2 Goku was the first and last time he could ever transform into it. It took place when Shain attacked Goten planning to disability him by cutting off his arms and legs. Goku then transforms and kills Shain with one punch.

Moves:

Kamehameha Blitz - Without even saying it and putting his hands into gesture, Goku uses raw power to create this immense kamehameha wave.