I am making a flightsuit and was wondering which patch i should use GBI,
GBII, or GBIII?

the universal no-ghost logo(gb1).

If you want to be different, you should go with the GB III patch. Not many people have that patch in their costume.

The concept for the GB3 patch is just awful!
I never really cared for the GB2 patch, even tho the concept for the ghost raising the victory sign, I now find cool. The first logo is and always be the best. having the ghost with three fingers just shows no understanding of what the second patch meant
Joseph