I went back to my two lovely Kozaru OC Nokkio (Left) and Kuba (Right) and tweaked their colors a bit while also giving Nokkio a staff similar to Goku's. Learning a little bit of the Journey to the West through Lego Monkie Kid, I feel these two resembles Sun Wukong and Macaque respectively (even though Macaque is an evil version of Sun Wukong).

If I had to fit these two in the DBZ universe, it would probably be a spin-off series completely unrelated to the official group but in a flashback they did, in fact, have a run-in with Goku and Vegeta and fought them once. They berate the two; Vegeta for being a worthless prince who nearly put the saiyans into extinction and having innocent blood on his hands, and Goku for being too immature and risking the fate of the worlds over the thrill of fighting stronger opponents. It would probably end in a draw but clearly they found some kind of respect for the two saiyans.

Also, some interesting dialogue between the four I thought of:

Vegeta: "To think that the few of my people who survived threw away their saiyan honor and dissolve to such an inferior form!?!"

Nokkio: "To you, our form is inferior. To us, it was an eye-opener! We finally realized how blood-thirsty and brutal we were as saiyans. We happily ripped that part out of us!"

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Goku: "What's so bad about getting stronger and fighting powerful warriors? I think it helps us understand one another."

Kuba: "Sure. Its one thing to spar with one another to help us gauge each other's strength and weaknesses. It's a completely different matter when you actively go above and beyond to seek out godly powers and put the whole world in danger...all for some stupid thrill of battle!"

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Nokkio: "Tell me, Prince. How does it feel knowing that YOU and your pathetic lineage are the reason the Saiyans nearly became extinct?"

Vegeta: "S-Shut up!"

Nokkio: Meh. To be honest, we deserved it. After all, all we ever did was backstabbed those who showed a bit of kindness towards us. And for what? Wealth? Technology? Showing off our pride? In the end, Saiyans were ruthless thieves that needed to be put down."

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Kuba: "Was it worth it? Putting the worlds...no, the universes in danger of erasure all so that you can enjoy fighting stronger warriors? Did your family mean nothing to you? Your friends? Everyone who have looked up to you? You would easily cast them aside to satiate your desire?

Goku: I-It's not like that...I just-"

Kuba: Excuses! I know who you really are...a blood-thirsty monster! All of the saiyans were like that. Every. Single. One. I am proud to leave that part of me behind and cherish the life I have with those I care for. I use my strength to protect them from others who would do harm. THAT'S the difference between you and me!"