Flynn Taggart, also known as Doomguy, is the main protagonist in the DOOM series. He is a space marine known for his relentless battle against the forces of Hell after a demonic invasion on Mars' moons. His character is defined by his courage, strength, and near-superhuman resilience. While mostly silent and faceless, Doomguy's actions speak for him, making him an iconic hero. In the series, he stands as humanity's last hope, single-handedly fighting hordes of demons to save Earth and the universe.