So basically, which of your bots is considerably different from the others in your collection? Like, it doesn't have to be your newest/biggest/current favorite one (although it could be), but more so the one that's the most unique & different in whatever way you consider it to be.
For example, my newly acquired Beast Machines Blackarchnia (+rep dguastel) is more than a little different from any sort of TF that I've owned in the past (being feminine like an action figure with virtually no kibble in the way that she is), and the same could be said for my road ready mutations Donatello who transforms into a Porsche & who I still believe was shells ahead of it's time.
In other words, which one of your bots are not like the others?
ream: