I may just do that Bigg, I ‘ve thought about it like having the RGB & the EGB in the story, but here ’s some ideas for the fan fiction.
1st idea, there's this huge thunder storm, and somehow it strikes the bliuding causing a short breach in the unit and there's this hole in the unit, only one ghost can excape but instead of his physical state his still in his ghost form and he breaks, trying to find away to bring himself back in his physical state.
#2 He has to capture a gb to feed on his fear so he can return to his physical form.
#3 the problem is that he's half complete after feeding on one of gb's fear so he hasn't to capture more of them to do so.
#4 He underestimate Egon which finds a way to carture the bogeyman and repairs the unit.