Son Goku stared at the group of fighters with their blades and he could help but be excited he didn't know why but he just couldn't stop being excited. Goku suddenly jumped right infront of Rex as he threw a punch Rex blocked it barely.
Rex: Wow your extremely fast!
Goku: Thanks right back at ya!
Rex knocks Goku back as he ran towards him again sword readied as Moràg, Zeke, Tora, Nia, Jin and Malos follow behind. Goku lands on his feet as he flew toward the group the battle of the Saiyan and the Aegis was beginning. Rex, Nia and Tora started swinging their weapons. Goku had to remain on the defense to see what all they could do Zeke and everyone else shot blasts of ether at Goku.
Goku: Man you all are really good but I am not out yet!
Goku kicked Nia, kicked Tora, then punched away Rex all the while dodging the ether blasts shot at him.
Rex: Pyra Mythra!!
Pyra and Mythra: Got it!
Rex threw the swords to their blades as Pyra and both Mythra ganged up on Son Goku. Goku started attacking back as they started clashing sword to fist.
Mythra: How in the universe are you able to fight with only your fists no weapon needed??
Goku: Took a lot of training and determination. Man fighting two of the strongest blades ever concieved it is getting me pumped up!
Pyra: Man you are a really weird warrior Goku.
Rex: Hey Goku look around!
Goku: ??
Everyone was surrounding Goku all running at him at once. Goku seeing this jumped back still in the center of them all as he crouched and brought his arms to him
Goku: HAAA!!
Goku launched them into the air as he hit them all to each other into one pile floating in the air as he shot a Ki blast at them all putting them into a nearby mountain. They fell to the ground as they all got up dumbfounded at what he did.
Jin: That was new what... are you Son Goku?
Goku: I am Son Goku the Saiyan!!
Goku took a close look at Mythra especially her yellow hair.
Mythra: What's up with you why are you staring at me?
Goku: Wanna see something cool?
Rex: Sure what do you have in mind?
Goku's face got serious as he started to power up tiny pebbles and rocks were being lifted around him.
Malos: What in the world is he doing??
Zeke: Looks like he's powering up...
Goku: RAAAAAAAGHHAAAAAAHHHHH!!!!
A golden light surrounded him blinding everyone when the light disappeared his hair turned Yellow and picked up his eyes were green and had a yellow aura.
Rex: What in the?!
Mythra: What happened?!
Pyra: He changed...?
Goku: I am Son Goku the legendary Super Saiyan!!
Tora: Super Saiyan??
Goku's smile came back as his aura disappeared as his hair was still golden ready for round 2. Rex and the group readied up again ready to take on Super Saiyan Son Goku.