I have unlocked both and both are really good. However, Scorpion has move upgrades than scorpion. Either way, they rock. I beat it with SubZero as well. Didn't get anything different. To get Subzero in VS mode, the yinyang sysmbol is behind a lion statue in front of the Wastelands castle. You know? Where the boat docks. The statues is on the left. You can walk behind it and the camera angle changes. You need the double jump ability to get it which beating Goro, you will obtain. I need to unlock Reptile in VS mode? Is that in the livinig Forest?