The Controller

The Controller is a Rogue Timelord who travels in a Type 89 T.A.R.D.I.S which was stolen before the Time War. This Timelord is well known as being unpredictable, arrogant and selfish who travels under facades and fake personalities; the most common of which being his Gallifreyan name Zenflontaranyndazon or Zenflon for short.
=== Origins: ===
Like any other Gallifreyan child chosen to be a timelord, at the age of 8 Zenflon looked into the untempered schism; it was here that a quiet but constant screech would begin. This sound would only further develop Zenflon into The Controller, this sound could be ceased temporarily whenever Zenflon’s mind felt in control; Zenflon became a biological control freak. 
The Controller lived his youth on Gallifrey as an Engineer, being able to improvise a uniquely designed Sonic Probe which doubled as a Laser Screwdriver; this would later be a tool for his escape. The Controller’s career as an engineer would be cut short due to his realisation that as long as he was on Gallifrey, the Timelords would control him; it was due to this realisation that increased the volume of the sound so that it was all he could hear, it drove him to insanity. In his mental breakdown, The Controller managed to steal a TARDIS, a device which he used to escape Gallifrey. 
Zenflon dared not leave the doors of his TARDIS, it was one of the few places where he was alone; all that he needed to control was the TARDIS. To appease the TARDIS, The Controller would sometimes cease his hermit lifestyle to help those in need; usually opting for the easiest species to help, the Humans of Earth.