Character Relationship Map: Doom

Characters

• Sarge (played by Dwayne Johnson) — protagonist

  Marine squad leader tasked with securing Mars facility data and surviving demon outbreak.

• John "Reaper" Grimm (played by Karl Urban) — protagonist

  Marine and twin brother of Dr. Sam Grimm, investigates Mars anomalies.

• Destroyer (played by Deobia Oparei) — supporting

  Heavy weapons marine in Sarge's squad, dies during Mars facility assault.

• Duke (played by Razaaq Adoti) — supporting

  Marine squad member who witnesses Goat's resurrection and Carmack's mutation.

• Mac (played by Yao Chin) — minor

  Marine squad member who dies during the Mars facility search mission.

• Goat (played by Ben Daniels) — supporting

  Marine squad member killed and resurrected by C24 serum on Mars.

• Dr. Carmack (played by Robert Russell) — minor

  UAC lead scientist who sends distress call and mutates into a demon.

• Portman (played by Richard Brake) — supporting

  Marine squad member who falls during the facility assault.

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Sarge → Dr. Carmack (Professional Marine And Scientist) — Their operational relationship changes from protecting a scientist to eliminating an infected threat.

  The marines escort the injured Dr. Carmack for treatment, and Sarge later kills him after he mutates.

• Sarge → Mac (Power Squad Commander) — Mac participates in Sarge's operation as a squad subordinate.

  Mac joins Sarge's squad for the Mars facility search mission and dies during the assault.

• Sarge → Portman (Power Squad Commander) — Portman serves as a subordinate marine in Sarge's squad.

  Portman is listed among the marines assigned to Sarge's search-and-destroy operation.

• Sarge → Destroyer (Power Squad Commander) — Sarge directs Destroyer within the containment mission.

  Destroyer is part of the marine squad deployed under Sarge to search the facility and destroy the creatures.

• Sarge → Goat (Power Squad Commander) — Goat operates under Sarge's command until his death and resurrection.

  Goat is one of the marines sent on Sarge's search-and-destroy mission to Mars.

• Sarge → Duke (Power Squad Commander) — Duke follows Sarge's operational authority during the outbreak.

  Duke is identified as a member of Sarge's squad, and Sarge orders the squad to sanitize the facility.

• Sarge → John "Reaper" Grimm (Professional Commander And Teammate) — Sarge commands Reaper during the initial rescue and containment operation.

  Sarge leads the marine squad, while John "Reaper" Grimm serves as one of its members during the Mars mission.

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• John "Reaper" Grimm → Dr. Carmack (Narrative Investigator And Threat) — Carmack's disappearance and mutation help drive Reaper's investigation of the outbreak.

  Reaper participates in searching for survivors and uncovering the C24 experiments after Dr. Carmack's distress call begins the mission.

• Duke → Dr. Carmack (Conflict Witness And Adversary) — Their encounter links the scientific outbreak to its violent consequences.

  Duke witnesses Dr. Carmack's mutation and is later attacked by the mutated scientist.

• Duke → Goat (Narrative Witness To Transformation) — Duke directly observes the outbreak's disturbing effects on Goat.

  Duke witnesses Goat resurrecting and then killing himself by smashing his head against a reinforced window.

• John "Reaper" Grimm → Goat (Alliance Teammates) — Their connection is established through shared squad service and the outbreak mission.

  Goat and Reaper are members of the marine squad sent to search and secure the Mars facility.

• John "Reaper" Grimm → Duke (Alliance Teammates) — They belong to the same combat team during the investigation.

  Reaper and Duke are both marines in the squad investigating the facility and the creature outbreak.

Story Analysis

A marine rescue mission becomes a battle against human mutation, military absolutism, and the consequences of genetic experimentation.

Plot Progression

1. The Ark Opens Mars — A distress call brings Sarge and his marine squad through the Ark to the Mars research facility. Reaper begins uncovering the archaeological history behind the crisis.
2. Mutation Beneath The Facility — The squad searches for survivors, encounters a creature, and loses Goat. Goat's resurrection and Dr. Carmack's mutation reveal that the outbreak is changing human bodies.
3. The C24 Truth — The marines fight through escalating attacks while Destroyer, Portman, and Mac die. Sarge and Reaper discover that UAC's C24 experiments caused the mutations.
4. Containment Turns Ruthless — The creatures reach Earth, and Sarge orders total sanitization of the facility. The squad is overwhelmed, Duke dies, and Reaper is forced to use the C24 serum.
5. The Enhanced Final Duel — Reaper awakens healed and confronts the infected Sarge. Their battle ends with Sarge's destruction and Reaper carrying his unconscious sister toward the surface.