The EU had an explanation for this (of course) wherein there are two different types of Gungan, one being the Jar Jar kind and the other being the Boss Nass kind.
But why does Boss Nass need and explanation? He’s just fatter than the other Gungans. Tarpals on the other hand actually has a unique feature.
Because that’s how the old EU (slightly less so the new EU) worked, everything had to have a detailed exacting explanation even if they had to retcon or shoehorn it in. Usually they were dumb.
I’m not questioning that the EU had explanations for everything, I’m well aware of that, I just find it to be odd, even by the standards of the old EU to explain Boss Nass, which really didn’t need some elaborate exuse, while Tarpals, who does need it, doesn’t.
EDIT: Now that I’ve actually looked up Gungans on Wookieepedia I see why Boss Nass would be considered a different type of Gungan as his eyes are completely different from the rest.
I still think it’s weird that Tarpals’ tendrils mustache is never mentioned (at least not that I can find).
