A few questions about Goo
Is Goo a WeiDu made or converted mod?
He was once distributed in the archaic format known as IAP. I'm not sure if the young 'uns these days even know what that is. But now he's thoroughly WeiDU and entirely compatible with everything. Except maybe a "Goo-Be-Gone" mod or something.
Where can do find Goo? (in the game that is, not for download)
In the Planar Sphere, specifically the halfling cannibal area. He's hiding from them.
In what order do I install Goo? (in relation to other mods, in particular Solaufien)
Any order you please. He only has one banter with Jan, so as long as Jan's installed first, you should be okay.
Is there anything else I should know about Goo before playing with Goo?
A few things, yeah.
One: You won't want him in your party for long, since he's probably more boring than the One-Day NPCs. The critics were raving about his voice-acting though, back in The Day.
Two: He was the first NPC mod ever in the entire history of everything. Or at least for BG2.
Three: While I'm proud of my accomplishment as a trailblazer and all that jazz, I'm not interested in this humourous mod to expand it or make some obvious tweaks to make it seems realistic (i.e. Goo can wear boots, and drop his "mouth").