Character Relationship Map: The Host

Characters

• Park Gang-du (played by Song Kang-ho) — protagonist

  Slow-witted snack bar owner who becomes an unlikely hero after his daughter is kidnapped by a river monster.

• Se-jin (played by Lee Jae-eung) — supporting

  Homeless boy attacked and swallowed by the monster in the sewers.

• American Doctor (played by Paul Lazar) — minor

  Medical expert who reveals the virus hoax to Gang-du.

• The Monster (played by Oh Dal-su) — supporting

  Amphibious creature emerging from the Han River, driven by mutated instincts.

• Homeless Man (played by Yoon Je-moon) — supporting

  Street dweller navigating the crisis and providing ground-level perspective.

• Fat Guevara (played by Yim Pil-sung) — supporting

  Nam-il's old friend who helps track Hyun-seo but betrays the family for a bounty.

• Se-joo (played by Lee Dong-ho) — supporting

  Homeless boy who survives the monster's attack and hides with Hyun-seo.

Key Relationships

• Fat Guevara → Se-joo (Professional Tracker)
• Se-jin → Se-joo (Social Fellow Homeless)
• The Monster → Homeless Man (Conflict Attacker)
• The Monster → American Doctor (Conflict Target)
• The Monster → Se-joo (Conflict Predator)
• The Monster → Se-jin (Conflict Predator)
• Park Gang-du → Homeless Man (Alliance Comrade)
• Park Gang-du → Fat Guevara (Social Old Friend)
• Park Gang-du → American Doctor (Professional Patient)
• Park Gang-du → Se-jin (Social Fellow Survivor)
• Park Gang-du → Se-joo (Family Foster Father)
• Park Gang-du → The Monster (Conflict Arch Enemy)

Story Analysis

A dysfunctional family battles a mutated river monster while exposing government corruption.

Plot Progression

1. Toxic Origins
2. River of Terror
3. Betrayal and Cover-up
4. Chemical Siege
5. Aftermath and Renewal