I need help identifying the pigs.

Pbbft. Chihiro, I'm not sure that any of those are your parents. I tagged some of them, and will add translation notes if needed.

How would we tag Oolong, by the way? As "Oolong" or "Uron" ...?

Don't see Buurin that often in fan art.

*had a WYSI moment*

How would we tag Oolong, by the way? As "Oolong" or "Uron" ...?

What the fuck is "Uron"? It's "Oolong".
Dragonball names are rarely ever writen in romanji.
I'm pretty sure even Akira Toriyama spells it as "Oolong" when he writes out the name in English.

Pigs, pigs everywhere!

according to pixiv, the pig with a chef's hat is from エースコック (Acecook) and apparently a company mascot. he is called こぶた (Kobuta, Pig) or こぶた くん (Kobuta-kun, Mr. Pig) here. going to remove the annotation_request. please check. thanks.