One of the most catastrophic invasions occurred during the final day of the Time War when the Daleks invaded Gallifrey. But more on that later…
Who rules the Time Lords?
Time Lord society is split into six chapters, including the Doctor’s chapter, the Prydonians. From these chapters, the governing body - the High Council - was chosen. The High Council consisted of the President, the Chancellor, the Castellan (the head of security) and various Lord Cardinals. The Doctor briefly became President, but he ran away at the first chance.
All Time Lords, regardless of chapter, had to attend the academy. While this austere institution might seem like a noble place, it had a severely messed-up initiation ceremony. The Time Lord children, at only eight years old, had to stare into the time vortex, through a rip called the Untempered Schism. If you don’t think that sounds too bad, some believe it’s what drove the Master mad!
The rest of Time Lord society could be equally cruel. On Gallifrey, the Time Lords had a Death Zone (featured in The Five Doctors). Imagine a mix between a safari park and a gladiatorial arena, and you’d be in the right ballpark. They would put ‘inferior’ species in the Death Zone and watch them fight to the, well, death. Basically, they aren’t exactly the nicest of species.