Ink's successor and the last creation of Ink -- a first-generation evolved infected and one of the most significant lifeforms to emerge in We're Alive. Not human, not merely infected, and not a weapon created by any faction: a new and old species.
Released partly through Alvin's actions while attempting to recover Ink's research.
Personality
From the moment of his release, defined by conflict -- angry, volatile, and driven by the purpose his father imposed on him: to cleanse the world. But unlike a simple predator, he begins to question what that purpose truly means. Like Nicholas Tink, he is searching for balance and identity, and never knew his father either.
Understands the infected not as enemies or monsters but as a connected species, communicating with them through an ancient biological language encoded in memory and genetics -- he can interpret their story and their evolution, and his new form of infection can unite them all.
The infected grow more stable as they breed, experiencing less cognitive conflict between human memory and infected instinct; Coal exists beyond that struggle entirely -- his mind is already evolved, whole. He teaches himself to speak and studies both humanity and the infected; his isolation is incubation, not weakness.
Notable In The Series
Organizes a coalition of infected, leading them naturally as an alpha without cruelty or chaos -- he can control other infected and even infect other infected, his eyes turning black to mark his authority and transformation, passing messages and instructions through pheromones.
Does not simply kill; he organizes -- representing the next phase of the infection and the story's true antagonist.
Leads the infected unification that causes Primm to collapse under The Boar.