who is the time traveler in the time machine?

The Time Traveler is the protagonist of the story, and he takes over the narration from Chapter III until Chapter XII. He is known as "TT".

The Time Traveller - The Time Traveller's name is never given. Apparently the narrator wants to protect his identity. The Time Traveller is an inventor. He likes to speculate on the future and the underlying structures of what he observes. His house is in Richmond, a suburb of London.

That morning, he uses it and quickly jumps ahead over five hours. He gives it a second run and watches the world around him as the advance of time continues to speed up. After a while, the laboratory disappears--he assumes by destruction--though he remains on the same hill in the open air. He watches trees and buildings rise and fall, and his pace soon rises to over one year for every minute of his existence. He looks forward to seeing more of the developments of civilization he witnesses, such as great buildings and lush environments. Though it is not a problem while he travels at such high speed, he worries about colliding with some substance when he stops.