The Halo 3 Rat refers to a notoriously low-detail, static rodent model found in the 'Crow's Nest' level of the 2007 game Halo 3. While many background assets in the game were highly detailed for the time, this specific rat stood out for its blocky, triangular geometry and blurry textures. It became a viral sensation in the late 2010s and early 2020s as part of a wave of 'low-poly' irony memes, where players ironically praised the rat's 'perfect' design as a jab at modern gaming's obsession with hyper-realism. It serves as a symbol of nostalgic gaming quirks and the absurd humor common in the Bungie-era Halo community.