Logan

He is David "Hesh" Walker's younger brother and Elias T. Walker's son. After passing all his tests on the battlefield, he becomes a member of the Ghosts after being rescued by them and Elias, who is then revealed as the leader of the Ghosts. After the ODIN Strike, Logan, Hesh and Elias come together to co-operate with the remaining United States Special Operations Forces in California. Upon returning to his hometown, now dubbed "No Man's Land", Logan and Hesh find themselves joining up with Ghosts captain Thomas A. Merrick and Keegan P. Russ to cripple the Federation forces from behind enemy lines, while also hunting down Federation field commander and former Ghost Gabriel T. Rorke, who killed their father. After the United States was able to cripple the Federation with the LOKI Space Station's strikes, he and Hesh hunted Rorke to avenge their father's death and the other fallen Ghosts, but he was critically wounded and captured by Rorke at the end of "The Ghost Killer."

Logan was close to his brother, always following in his footsteps throughout the years. According to Elias, he is a lot like his mother. Logan and Hesh attended an unnamed school. When he became older, Logan and Hesh trained in San Diego's woods, taught how to shoot, hunt, speak without speaking and become men.

Logan is seen during the game as a quiet man, a cold-blooded killer and an excellent soldier, quickly rising up the ranks in both the Army and the Ghosts. Logan and Hesh are very protective of each other, both always seek to grow up, but to grow up together. Often, Logan found himself in difficult and complicated situations, but Hesh always defended him and Logan did the same.

Logan is quiet, strong, determined, and immensely loyal to his team. He has a potential that Rorke saw in him and wanted to use for his own purpose.