The Symbiote race are a race of darkness-intuned Agents from the Marvel Universe. They seek to form a healthy bond with their clients, but often turn them into killers for their own game.
- Venom (attached to Eddie Brock, Agent Venom, and Groot, amongst others)
- Carnage (attached to Cletus Kassidy)
- Anti-Venom (deceased)
- Scream (deceased)