Nexus Prime

Say, haven't I seen you somewhere before?

One of the Thirteen original Transformers, Nexus Maximus was created by Primus shortly after he assumed his planet form for the first time to guard Rarified Energon. At an unknown point in time, this Transformer was broken into five other robots: Skyfall, Landquake, Breakaway, Topspin, and Heatwave.

The Caretaker told its components that Nexus Maximus was "designated a Prime," like the other original Thirteen, but apparently Nexus Maximus isn't so needy as to actually put "Prime" in his name.