Goku has finally become Ultra Instinct this was the power that the Gods feared and was seemingly forgot with time. Goku stood there staring at Rex and Pneuma waiting for their move his hair was slightly floating looking more lifted then his droopy hair look in his normal form and his eyes were a piercing silver and his aura resonated with heat a heat even hotter then Pyra's heat. Rex and Pneuma stood their ground waiting for Goku to make his move.

Goku: Ok time to get this show on the road..

He took half a step before he rushed at Rex with lightning speed knocking him through multiple rocks and a battle filled with lightning clashes with Pneuma.

Goku: Sorry to say but I will not lose as easily as you thought I would.

Pneuma: I knew you were going to be a tough fight Goku but Rex and I won't lose either!!

Rex: That's right!!

Rex jumped back in the fight helping Pneuma battle Goku but he was so fast and emotionless.. Rex and Pneuma had gotten used to the excited kid like and friendly Goku not an emotionless powerful fighter like Jin. Goku was slowly getting pushed back but he had to stay defensive as he dodged all of their attacks. Soon after a minute of fighting Rex and Pneuma jumped back to shoot a flurry of ether blasts at Goku he avoided every last one slowly inching towards them.

Goku: Ka...Me...

Goku was charging a Kamehameha and it was aimed right for them he kept jumping around dodging all of their attacks they kept throwing them even faster.

Goku: Ha...Me...

Goku was dangerously close as his eyes shined as he jumped towards them making it right infront of their faces.

Goku: HAA!!!!

He shot the Kamehameha point blank right in their face burying them into the ground this did massive damage too.

Goku: Come on get up!!

Rex and Pneuma slowly climbed out only to see a Glowing Goku infront of them waiting his eyes were closed.

Pneuma: SACRED ARROW!!!

Rex: Genesis Saber!!

They shot all these blasts and attacks at Goku yet he dodged them all.

Goku: Pneuma come on unleash your full power!!

Pneuma: No!! I promised to never use that again!

Goku: There is no one else here just You, Rex and I. There is no one you can hurt no bystanders that can be harmed so power up!!

Pneuma began to power up unleashing her full power as Goku powered up as well his hair becoming white and his shirt was completely ripped off.

Pneuma: This is my full power!!

Goku: Then let the final battle begin!

Rex and Pneuma jumped at Goku while he followed what they did the battle was intense the sparks were flying as super powered blows were dealt and Goku was being pushed back again. Vegeta slowly rose up and noticed this.

Vegeta: KAKAROT!!!

Goku, Rex, and Pneuma looked at Vegeta in shock that he was still up.

Vegeta: DON'T YOU DARE LOSE!!!

With those words Vegeta fell back onto thd ground and passed out with that sudden boost of determination Goku started pushing Pneuma and Rex landing more cleaner hits on them. Goku was mostly giving Pneuma a beating because she was supplying Rex with power Goku kicked her into a wall and started throwing powerful Ki blasts at Rex. Pneuma then came out of the wall hitting Goku square in the face as he was knocked back.

Goku: Ultra Instinct won't last much longer... I WILL END IT IN ONE BLAST!!

Goku jumped back and started charging a Kamehameha and Rex and Pneuma did like wise charging a powerful ether blast

Goku: Kamehameha!!!

Rex and Pneuma: HAAAA!!!

The two beams began to clash pushing each other back..

Goku: Hmnngh...

Rex and Pneuma: Grrghh...

Goku was slowly winning as his beam overpowered theirs as Rex and Pneuma have lost. Goku turned into his base form as he pulled out a hand offering to help them up Goku had won!

Goku : Woo Hoo good fight!

Rex: We lost that means Jin and Malos aren't coming with us...

Goku: No they are that was just intimadtion for you to try harder.

Goku: See I wouldnt offer something like your friends back and then not give it after a fight like that! Speaking of your friends you all need energy.

Goku reached in his belt and grabbed 3 beans.

Goku: Here catch!

Goku threw three Green Beans at them as Goku walked towards his friends and gave them all a bean each. When they ate these beans they were suddenly back at full power. Goku was still full of tricks even when the battle was over.

Goku: So were you all as excited as I was?! Pyra and Mythra when I saw you go into that blueish green form of yours Pneuma.. Yeah Pneuma I got really excited!

Rex: We weren't as excited as you were but we were able to have fun with the fight.

Goku: Couldn't have said it better my self! It truly was an honor to fight the Aegis!

Goku smiled as he began to fly off waving at them. As a yellow cloud came and took him away.

Goku: Till we meet again guys! Ahahaha!

The battle was over and the time spent was short and while Goku had touched many people in his life the impact he made on Rex and his friends was one that wouldn't go away or be forgotten any time soon. One day they will want a rematch and when they do Goku will be waiting to fight!