What is the name of the alien race that symbiotes belong to?

The alien race that symbiotes belong to is called the Klyntar. Venom, Carnage, and other symbiotes are individual members of this extraterrestrial species, not separate alien races.

Symbiotes are amorphous, parasitic life forms that bond with hosts. The bond can enhance strength, speed, endurance, healing, and other traits, while the host’s personality can strongly influence the symbiote’s behavior. This is why Venom and Carnage are both symbiotes but have very different identities and relationships with their hosts.

In modern Marvel mythology, the Klyntar were created from the Living Abyss associated with Knull, the god of symbiotes. After rebelling against Knull, they imprisoned him inside an artificial planet that they also called Klyntar. The species’ name therefore has both biological and planetary associations in the comics.

The Brood, Chitauri, and Skrulls are unrelated alien groups. The word “symbiote” describes their life-form and bonding behavior, while Klyntar is the species name.