Doc Hynes
Agent of the Department of Truth.
Origin
As a young teenager, Doc Hynes was obsessed with UFO sightings. He started a magazine covering the conspiracy with a focus on the "men in black." This got the attention of Department of Truth founder, Frank Capra, who mistook Doc's nickname for the honorific "Doctor." Upon finding out that he was only 15, Capra nearly abandoned his recruitment efforts, until Doc wowed him with his encyclopedic knowledge of men in black encounters and his understanding that while the witnesses were telling the truth, the reality of those encounters might be very different.
Creation
Doc Hynes debuted in Department of Truth #2 by James Tynion IV and Martin Simmonds
Major Story Arcs
The Mothman

Doc was teamed up with Agent Lee Harvey Oswald. They were investigating UFO sightings across the country as possible tulpas. They noticed a number of them groups in the Ohio river valley, especially West Virginia. So in order to witness one themselves, they started to plant sightings in an attempt at controlled manifestation. Unfortunately, their wording ("strange flying objects") was not specific enough. What caught on with the local population was a man with wings and red eyes which would eventually be dubbed "The Mothman."
People started to believe that the Mothman was an omen of an upcoming tragedy. That belief got so strong that on December 15, 1967, the Silver Bridge collapsed, resulting in the deaths of 46 people, two of which have never been recovered. There were claims that the Mothman was hovering above the bridge during this incident. Lee and Doc were forced to change their investigation to a hunt. Relying on tranquilizers, they managed to capture The Mothman. This was the first time a tulpa was captured alive, according to the DOT. Neither the Soviets or the Nazis had ever accomplished it.
Doc would be incredibly stressed by the operation and requested to be moved to managing the archive.