Master Chief (Halo)

Master Chief redefined first-person shooters on consoles when Halo: Combat Evolved launched in 2001, selling 5 million copies in its first year alone — a record faster than the average console FPS at the time. As the faceless Spartan, his stoic silence allowed players to project onto him, yet his bond with Cortana delivered one of gaming's most emotional narratives. Though 343 Industries' later entries fumbled the arc, the original trilogy sold over 44 million copies, making Master Chief the definitive Xbox mascot. His green armor is instantly recognizable, and the Halo franchise has generated over $6 billion in revenue, outperforming #4 Lara Croft's Tomb Raider series by nearly $2 billion.