Silent

• Humanoid

• Unknown

• Unknown

• Grey skin
• Small eyes in deep recesses in the skull
• Genetically engineered by the Church
• Seven feet tall
• Bulbous heads
• Mouthless faces
• Had four large fingers
• Often produced highly eerie rattling sounds

• Were "memory-proof"; anyone who saw them would instantly forget them when they looked away
• Possessed powers of post-hypnotic suggestion
• Could absorb electricity, increase the voltage a hundred-fold and fire it from their hands

• Unknown

• The Priests of Silencio

• Unknown

• Culture centers on prophecy & doctrine tied to preventing the question “Doctor who?”

• Started in Earth's distant future as Confessional Priests
• A renegade sect became obsessed with preventing the Siege of Trenzalore
• Travelled back in time, influencing human history over a long period of time
• Attempted to create a fixed death for the Doctor at Lake Silencio
• The Doctor implanted a post-hypnotic suggestion into footage of the Moon landing;
• All were forced to flee the Earth, as Humans would kill them on sight