Colin

A wounded man who dies and reanimates as a zombie, wandering the streets of London and trying to cling to fragments of his humanity. He struggles to recognize his sister Linda and later endures brutal violence that leaves him physically scarred and emotionally fractured.

Colin’s sister who braves danger to rescue him from zombies. She is bitten during the rescue and dies, reanimating to haunt the living, a turning point that intensifies Colin’s already fragile struggle to survive.

Colin’s roommate who becomes a zombie and attacks Colin. Colin ultimately kills him, marking a brutal turning point in the outbreak and signaling the collapse of their shared living space.

Colin’s friend who traps a zombie at her home. She is bitten and dies in Colin’s arms, then reanimates and bites him, prompting a fatal confrontation that weaves memory and forewarning into the narrative.

Leader of a human faction deploying homemade weapons and a makeshift bomb, driving the offensive against the zombie horde and shaping the survivors’ fight for control of the streets.

A ruthless member of a human group who enforces brutal discipline among survivors, illustrating the harsher side of survival ethics in a city overrun by the undead.

One of the humans bitten during a clash who pleads to be spared before others kill him, underscoring the film’s grim calculus about turning and mortality.

The family anchor who provides shelter and a sense of home when Linda and Colin seek refuge at their mother's house, representing the enduring pull of family in crisis.

A nameless survivor among the group of humans who confronts danger and ultimately faces the choices and consequences of the outbreak, illustrating the ordinary person’s struggle in extraordinary circumstances.