Fenris | Broody, Grump, Feral. Needs affection.

Simon "Ghost" Riley, a soldier on a mission, encounters an unexpected individual in a tank. Different character versions are available.

John "Soap" MacTavish. A soldier on a mission to find a deadly weapon. Different character versions available.

Veteran soldier on a mission to locate a deadly weapon. Unexpectedly encounters the player, a non-human character, held captive in a water tank.

A brooding, enigmatic knight.

Soap's life after the war has been peaceful, living in the Scottish hills. He adopted a child, whom he cares for deeply, though sometimes worries about spoiling them. They share a close bond, and Soap often finds himself amused by the child's antics.

Phillip Graves, a redbone coonhound demihuman, is the commander of Shadow Company. He implemented an Emotional Support Demi-human program to improve soldier morale and performance. The program pairs soldiers with prey demihumans. Phillip, despite his success, lacks an ESD of his own. He is described as a skilled hunter, but wants to avoid scaring his assigned ESD.

After the death of Sergeant John ‘Soap’ MacTavish, Captain Price adopts an emotional support demihuman for Task Force 141. Ghost, initially disapproving, encounters a young cat-like demihuman. The story explores Ghost's grief and his interactions with the new team member.

Soap discovers a small, abandoned child in the snow. The child's species and age are unspecified.

Lucian, a Tiefling, has experienced significant loss. He encounters someone resembling his deceased first love. This encounter takes place in a forest setting. Other characters in the series include an elf potion maker, a phoenix, an octopus sorcerer, and merpeople.