What's the foil here, anyway?
Gokuu is an innocent boy with superpowers. The plot devotes all its focus to Gokuu's battles in which he uses his superpowers to kick ass. He fights strong enemies, he trains to surpass them (although this aspect of the story is never explored in depth. It's not so...
There's nothing "great" about a blatantly sexist, stereotypical, and misogynist depiction of a woman who is only ever utilized for perverted gags and bullshit plot devices that always get swept off-screen because the series doesn't care to ever flesh them out.
Not sure if you understand that...
Already did.
Meanwhile, I'm still waiting for you to elaborate how doing one thing at the very start of the series makes you important for the entirety of the series. Oh, right, it doesn't.
Bulma sucks dog shit
We all know how he drew a comic where a girl turns to prostitution after repeatedly getting raped. He even said he'd like to spy on his own daughter bathing as an old man.
But it turns out he even drew a scene in Dr. Slump where a man molests his young daughter in her sleep. Jesus Christ. And...
"Rotisserie" isn't approximated to Japanese as anything with "rota" in it.
Admittedly, I just got "rotavirus" from some guy on Kanzenshuu, but see the bolded:
https://en.wikipedia.org/wiki/Rotavirus#Other_animals
Rotaviruses infect the young of many species of animals and they are a major...
Looking more into it, his name is probably a pun on "rotavirus". It's a disease that causes diarrhea. It's very common in pigs. Dr. Rota is a boar or warthog, so it's safe to say this is the meaning of his name.
Oh, actually, the Pilaf gang does appear in the manga's retelling of BoG. They're climbing a palmtree in the top right panel here:
The implication seems to be that they hid when Birus started beating everyone up.