Happiness — Characters & Cast

Securing permanent domestic stability, which evolves into safeguarding the vulnerable and protecting Yi-hyun.

Transitions from an emotionally guarded SWAT officer who views life as a transactional point system into a selfless protector who embraces vulnerability and deep emotional connection.

Protecting Sae-bom at all costs and maintaining societal justice.

Overcomes the trauma of a ruined athletic career; when infected, he harnesses his love for Sae-bom to maintain cognitive control and overcome the predatory urges of the virus.

Synthesizing a cure to save his infected, pregnant wife while managing a national crisis.

Begins as an uncompromising, ruthless military bureaucrat, but ultimately makes critical ethical compromises to protect Sae-bom and provide the world with a viable vaccine.

Financial enrichment and avoiding prosecution for uxoricide.

Murders his wife and uses the lockdown to distribute 'Next' and orchestrate chaos, serving as the ultimate personification of human evil divorced from viral infection.

Gratuitous sadism and violent self-preservation.

Poses as an innocuous maintenance worker before unmasking as an opportunistic serial killer, proving human malice operates independently of the epidemic.