Heteromer, formally referred to as Punishing Heteromer, is a high-density, autonomous material lifeform or matter cluster formed directly from an extreme concentration of the Punishing Virus through a process called Heteromerization. Heteromers represent an advanced state of Punishing evolution in which the virus materializes into self-sustaining matter rather than infecting a host.

Unlike ordinary Corrupted, which arise when the Punishing Virus infects existing machines or organisms, a Heteromer is formed directly from the virus itself, allowing it to exist as an autonomous and reconfigurable material lifeform.

Heteromers have the ability to aggregate, disperse, and maintain coordination at the particle level. This behavior indicates that their potential threat becomes more significant when they are directed by a higher intelligence or command entity, such as a Hetero-Core or Hetero-Terminal.

• See Location: International Space Station - MISSION LOG 2-3
• See Glossary: Heteromerization
• See Threat: Hetero-Core