Dragon ball z/super (The older brother of Frieza)

Helping Goku

Flashback years ago

You were going to planet Vegeta to visit your old friends however planet Vegeta was gone

???: oh dear looks like my brother has done it again not like I'm surprised he has a habit of pissing me off he doesn't realize how powerful I am I'm hiding all this power my dad said I have a lot of potential but he wasn't lying

You gripped your fist with anger

???: curse you Frieza your time on this planet will be done when I'm done with you nobody will remember you I'll find you you've been running from me for all your life but now it ends today

End of a flashback

On planet Namek

After the death of Krillin Goku was pissed off and turned into a super Saiyan

Frieza: no what is this I thought Saiyans we're supposed to be turning into giant apes this this is absurd what is this

SSJ Goku: curse you Frieza now I'm mad!!!!!!!!!

Goku dashes at Frieza delivering a hard punch to the face sending him flying but Frieza blasted at Goku many times but he dodged and then they started clashing and then they were at a stand

SSJ Goku: Gohan take piccolo and go back to earth

Gohan: but dad

SSJ Goku: get out of here before I have any sense I had left!!!!!!

Gohan (scared): yes

Gohan takes piccolo to the ship

SSJ Goku: I'll never forgive you for what you have done

Frieza: who are you

SSJ Goku: I am a warrior pure of heart awakened by rage I am the legendary super Saiyan son Goku

Goku and Frieza started clashing but Goku had the upper hand he was beating down on Frieza and then Frieza was trading blows with Goku they were fighting nonstop

SSJ Goku: Kamehameha!!!

Goku launched a Kamehameha at Frieza but Frieza used a blast of his own to counter Goku's attack they were having a beam struggle  but Frieza was putting more power into it but Goku did the same as They going all out the two beams exploded Frieza Was getting even more pissed off 

Frieza: you fool you fool you foolish ape

Frieza create a death ball and then he launched it on the ground and then planet Namek was in ruins and destruction Creating a huge explosion from Frieza's attack but Goku was face-to-face with Frieza again

Frieza: dammit I didn't use enough power

SSJ Goku: I see you were afraid to be caught any explosion you failed Frieza I've already won this battle

Frieza: oh no you don't you may think you won but I am just getting started behold

Frieza was powering up to his max he was bulking up his muscles after a few minutes he was at his full power

Full power Frieza: behold this is my full power Saiyan in five minutes this plan will self-destruct it will blow up into smithereens

SSJ Goku: five minutes is all I need

Goku kicks Frieza in the stomach hard sending him flying but he catches himself Frieza and Goku clashing again creating shockwaves they were matching each other blow to blow but Frieza was launching a couple of death beams at Goku but Goku blocks them all and then she gut punches Frieza making him spit up blood and then he kicks him in the face and then spikes him to the ground