Forrest Byrnes

Forrest Byrnes is a U.S. Forest Service campaign and advertising mascot in Firewatch. He appears in the game as a wooden cutout at one of the entrances to the Shoshone National Forest, with a smaller variant near the Two Forks Lookout outhouse allowing him to be picked up. He also appears on the "Forrest Byrnes Can DIG IT" Forest Service poster. He is most notable, however, for being the protagonist of the hidden Forrest 64 minigame, a Nintendo Switch exclusive. In the exclusive hidden minigame he is voiced by Chris Remo, a developer on the game and the composer of the Firewatch Original Score.

Behind the Scenes
Forrest Byrnes is not a real Forest Service mascot, and was designed as a parody of real Forest Services mascots, such as Smoky Bear. It's possible that in the Firewatch universe, he was a regional mascot to Wyoming, and possibly around that region in general or simply spilled over into neighbouring states, as Colorado native Henry is aware of the mascot and was "afraid of him as a kid", as revealed in a conversation about the mascot between him and Delilah.

As revealed in the Firewatch Audio Tour, early on in the development of Firewatch it was planned that there would be more Forrest Byrnes posters in the game, and as events transpire and Henry has reason to fear for his life the posters would start appearing as more and more ominous, giving Forrest Byrnes a shadow-covered face and glowing red eyes. Henry might've even stumbled upon an area covered in said posters. While this idea was ultimately scrapped, the "DIG IT" poster is a leftover of this concept, featuring Byrnes with the aforementioned appearance.