Drone Pod
The Swarm doesn't strike all at once. It infiltrates first.
Drone Pods are the first wave: fast-growing, semi-autonomous creatures directed by hive-echoes from distant queens or nodes. They are not smart. They don't need to be. Some tear through armor. Others spread viral mold or excrete corrosive spores. All are expendable. They are not born to win battles. They are born to open the way.
Drone Pod is a horde squad for players who want to overwhelm through numbers and pressure. Your units are cheap and disposable, but the Brood Mother's Infest ability spawns free Swarmlings mid-mission, and Neural Command lets her direct multiple squadmates in a single activation. The more enemies you pin down, the harder you are to stop. Attrition is your weapon.