- last post: 01.01.0001 12:00 AM PDT
Infection forms don't just pop into the grunt or jackal's heads, but they are created there, grown. The flood need some way of reproducing, and that is how they do it. They use beings deemed unsuitable for combat. Carrier forms always explode, Spartan 3920, the non-explosive ones you are refering to are called Combat forms. The infection forms are the ones that pop on your shields, are grown inside a carrier form, and once free, latch on to a host, and turn them into a carrier or combat form.