Three Dog is the radio host, DJ, and news anchor of the Galaxy News Radio station in the Capital Wasteland in 2277, playing music that would have been heard on the radio in the years leading up to WWII, as well as the immediate post-war era.
Born to parents who made their way in the world as members of a traveling theater group, Three Dog grew up listening to rock music, hating the government that he never knew (but surely caused the nuclear holocaust), and fully believing in the rights of free speech and communal law. At some point before he established GNR, he was taking Jet and stumbled across Oasis.
He established GNR in 2272, together with Margaret (Should Three Dog die, she will replace him as the radio host). Since he began, he's been broadcasting to the Wasteland with public service announcements and music. At times he makes jests at Enclave Radio, going as far as mocking President John Henry Eden's voice.
Three-Dog believes in what he calls 'Fighting the good fight', which boils down to noble pursuits in the fight against raiders, super mutants, slavers, Talon Company, and the Enclave. This explains why he cooperates with the Brotherhood of Steel. However, he does not do any physical fighting nor does he help to coordinate or organize it.
Galaxy News Radio: Failing, or not taking the aforementioned speech check starts this side quest. If you pass that speech check, you can immediately reinstate conversation to have both quests running up at the same time. You can also come back later, or see him for the very first time after having made progress otherwise in the main quest to find your father, and if you bring your support to his "good fight", Three Dog will also give you this quest.
Evidently, his broadcasts are pre-recorded. He can be viewed at the GNR HQ, not doing anything of note, but still his public service announcements or other news can still be heard on the radio. This is further supported by the fact that he can be heard on the radio at any time during the day. Additionally, he often says in his introduction "coming to you taped from my fortified bunker in the middle of a DC hellhole" though he also will say "coming to you live".
If the player kills Three Dog, Margaret will become GNR's broadcaster. However, she will be extremely unmotivated to do this job and mention that Three Dog was murdered over and over again. The achievements of the Lone Wanderer will not be mentioned by her.
If the player helps Roy Phillips get into Tenpenny Tower, Three Dog later refers to the "wholesome slaughter" of the former residents, instead of the common expression "wholesale slaughter."
Three Dog's broadcast expression can change depending on the actions of the Lone Wanderer. Should the Lone Wanderer pursue a noble, good-karma path, Three Dog will say "Nice goin' kid!" at the end of an event-determined broadcast. But should the PC choose an evil, bad-karma path, Three Dog is quoted as saying "Not cool kid. Not cool at all." Or, "what's with that, kid?"
"Now what if I, the all powerful Three Dog, bow-wow-wow, were to tell you that somewhere right here in the Capital Wasteland, is a place with lots of trees?"
"People of the Capital Wasteland, it is I, Three Dog, your ruler! Hear me, and obey! Oh sorry, that's that other radio station."
"Hey nifty America, it's me, your President John Hen-- Hahaa, gotcha! Three Dog here, how's everyone doin'?"
The name of the character Three Dog comes from a previous character played by his voice actor Erik Todd Dellums, called "Dog 3".
Three Dog shares similarities to very many DJ characters from movies and real life, Wolfman Jack chief among them.
pcps3xbox360 Occasionally, Three Dog will mention events that occur after the ending of the game. He will only do so if the player had downloaded the Broken Steel downloadable content and has not played through the part in the game before it.
pcps3xbox360 Sometimes after starting a new game, Three Dog can be heard stating things that haven't come to pass yet. This can be very annoying as it usually lasts the entire game or until you catch up with what he's talking about.
ps3xbox360 Sometimes Three dog will start saying a comment and then quickly switch comments about the player over and over again. This can be annoying and not allow you to listen to music for the rest of the game.
pcps3 Occasionally Three dog will repeat the "News" section of broadcast 2-3 times over until he will continue playing songs again.