4. Alex Mason (Black Ops 1, 2, & BOCW)
As the main protagonist in Black Ops 1, and a secondary protagonist in the sequel, Alex Mason is flawed by his inability to trust his own senses. This makes for a fascinatingly damaged character, who deeply changes over the two games, yet somehow manages to retain both his passion and impulsiveness, despite the chaos around him. His character arc is really well written, and you can see him evolve. You see this evolution in Black Ops 2 especially, where the player's choices start to affect him. He reappears in BOCW, but as it is the latest game in the series, we won’t talk about that here! | © Activision