Invited Hive Fleets

Brood Serpentia Genestealers are extremely resistant to injuries especially the crab, shark, spider and cobra variant, they also easily adapt any environment of any planet.
Cobra Genestaler is the predominant organism usually ahead of the brood can subdue preys in many ways, also has the ability to plan complex tactics, exposing disposable beastmen variants to enemy fire while rest of organisms in brood surround and kills enemies.