Flood carrier form (Earth-2042)

The carrier form is a Flood form used to incubate and spread Pod infectors. Carrier forms are formed from older combat forms, or from infected bodies that are unsuitable for combat.

The carrier form has more varieties such as the Flood spawner, which can produce a mass amount of Flood forms without killing itself, and the Flood burster. The Flood spawner can notably spawn Flood forms anywhere it wishes, while Flood bursters spawns a variety of Flood forms once its internal pressure has reached a certain point.

Source

 * https://www.halopedia.org/Flood_carrier_form