The Nameless One

General
The Nameless One is an incarnation of the Doctor, the protagonist of the YouTube science fiction programme ERAS. He was portrayed by actor Thomas Ramshaw.

Young, tolerable and robust, the Fourteenth known incarnation of the Doctor, christened the Nameless One by his Fifteenth self, set upon the warrior path for which he had been intended after the Alternate Thirteenth Doctor was forced to assume the mantel once again by High Councillor DuFont [YT: The Thirteenth Doctor becomes the Nameless One]

As the Nameless One, he disavowed the name "the Doctor" once again. Though the Time Lords and many others continued to refer to him by that name, he was also referred to as "the Warrior", "the Soldier", "The Crusader" and more, taking on names such as, the "Doctor of War", and "the Renegade" once again, but, as far as the Doctor was concerned, he had no name.

As he fought alone, in many liberated Timelord areas, he became regarded as a war hero who commanded a great deal of respect from the Time Lord military. As previously, when he was the War Doctor, he was noted for going into battle unarmed, but winning nonetheless, with his unarmed state being the last thing many saw.

The Face of the Doctor
The Doctor took on the physical appearance of Oliver Howell, a companion he met in his Alternate Eleventh Incarnation. At first, it is rather ambiguous as to why the Doctor took on this face. But, he later realises that it is to remind himself that he is the Doctor, and that he can always save people; a face chosen by his previous incarnation, the Thirteenth Doctor. Furthermore, he takes on Oliver Howell's resolve and fighting characteristics.

Personality
The Nameless One once again used the words "no more" in order to deal with nightmares, depression and more, as if the mere thought would allow him to know that this would someday end. All his actions were to be justified in "the name of peace and sanity.