I've been collecting these toys since they same out in the 80's and recently found some interesting things throughout my own collection. I figured any one selling or buying GB toys would want to know this so thats why i'm posting it here.
Slimed Hero Ray Stanz : has two different color ecto goggles that go on his head (red and blue)
Mouth Shooter ghost: This is a ghost that comes with two smaller ghosts that shoot out of his mouth when you squeeze him. Look Carefully! As both the small ghosts are different in design yes, but they both come in different colors! The blue ghost is also found in orange and the orange ghost is found in blue.
The proton packs for the original series, slimed hero series , and ecto glow series have a minor change as well. The peg on the pack that sticks out and goes into the figures back is what to look at. normaly there is a slit in the front of the peg that goes let to right, but on some they go up and down.
deluxe Eduardo figure comes with two different colored electronic packs, and the deluxe Roland comes in two differnt colored out fits (black with red, and back with yellow).
Extreme Ghostbusters Slimer has a variation too. The green peg that connects slimer in the bottom of him to platform he rolls on , the peg comes in two different lengths, one short and one long.
As i come across more i'll keep you posted.
Finally just a question that has bugged me for a while. A long time ago in our galaxy not that far away (United Kingdom to be exact) i purchased on e-bay am Extreme ghostbusters motorcycle that comes with an exclusive eduardo figure. I have never seen this in the USA anywhere , and leaves me wondering if any other vehicles exist we don't know about?
let me know if you have found any other variations.
Spengler1