In Halo 2, if you start the campaign level Gravemind on Legendary, an Easter egg can be spotted during the opening cutscene. After the Gravemind finishes his long conversation with the Arbiter and John-117, the camera fades to the High Charity station. Inside there are Brutes defending the room where the Prophets are hiding from the Elites. When the Grunt climbs the arch and the camera focuses to the crowd up ahead, you can see standing in the crowd of Grunts a hidden 2D image of a man in nothing but gym shorts looking at the floor, with his hands behind his head. Dubbed the "Half-Naked Guy", this man is Bungie co-founder Jason Jones.

In Halo 3, the Half-Naked Guy can be found again standing on a small nook in an out-of-the-way hidden area at the beginning of the last campaign level, specifically in a dark room with a lethal chasm next to the hallway for the seventh Terminal.