Last week, I found something very cool. In general, this is applies only to the scramble city combiners from the Transformers. Some months, I did a chart for both Ultra Prime and Sky Reign and listed the different combinations for both of them. Last week, it has come to me. The number of different combination can be describe by this: n! with n being the number of transformers that com form the limbs. This only applied to the limbs. This does not apply to the robots that form the torso. Giving that they can form the torso, they are already out. Here is a good example: Defensor. The normal members of the protectobots that form Defensor are Hot Spot, Streetwise, First Aid, Groove, and Blades. Hot Spot form the torso, so he can only form that part of Defensor's body. Streetwise, First Aid, Groove, and Blades, on the other hand, form the limbs. First Aid normally form the left arm, Blades is normally the right arm, Streetwise is normally the left leg and the right leg is normally Groove. However, they can be arranged to any configuration that anyone wants. This means that Defensor has 24 different combinations for the limb bots. This not only applied to Defensor, but any teams that can form a super robot similar to how Defensor is formed. This robots are known as scramble city combiners. I am pretty sure that we have heard of this term before now. However, this also applied to Landfill from the 2001 Robots in Disguise toyline. Now, G1 Predaking can changed his limbs as well, but only between the robots that form similar part of his body. A good example will be Divebomb can switch places with Rampage, but not with either Headstrong or Tantrum. Power of the Primes Predaking can do as well with just his arms, but that is it. Devastator, on the other hand, only has the one configuration and that is it. His pieces cannot switch places at all. I have a funny feeling that this also applies to Raiden since both of them are from the original Diaclone line. Not having him means that I can be wrong, but I feel like that I am right about this. Now, this formula applies to any combiner that is scramble city, including "third party" (IP infringing) combiners. Now, this is something that I found that was kind of cool.