While there have been other sentient Decepticon "cities," Trypticon was the first to appear in any continuity. His intelligence and personality vary between those continuities, from a plodding near-animal to an introspective killer with designs on Decepticon leadership. Also variable is his scale: He's always depicted as being very large, but whether that means being two-to-three times typical Transformer size, literally city-sized, or somewhere in between, is rarely consistent. One element that should be consistent, given how often it's referenced, is the fact that his eyes can emit hypno-beams that subvert the will of other Transformers. Strangely, though, he has never been seen to use them.