The Sensorites
So, I'm watching all the old episodes possible and I'm four episodes through The Sensorites.
The Doctor gets extremely pissed at them. Mostly, it's the fact that they cause a rift between the Doctor and Susan but it was also the fact that the Sensorites feel free to get inside a person's mind and change it. They also stole something very valuable...the lock to the Tardis.
All in all, his level of rage reminded me of Eleven and the Silence, but then, the Sensorites are very similar to the Silence. The Silence knew things without being told so they must also use telepathy. Their eyes and noses don't resemble ours. The Silence don't appear to have mouths and the Sensorites barely have slits for mouths. The Sensorites don't like dark because they can't see. I'm wondering if the Silence has a similar low visual acuity but have developed other senses in place of it. Notice how they like to keep people in the dark; literally. The Oval Office and Orphanage were both extremely dark, what if they have a sort of echo location or something else and the dark is to keep an advantage over possible enemies?
What if the Silence and the Sensorites are from neighboring home worlds and they picked Earth on purpose because of what happened in the Sensorites episodes?