Flood pure form



Pure Form is a new type of Flood that is featured in Halo 3. There are three sub form, the Stalker Form, Ranged Form, and the Tank Form. Each Pure Form can mutate into another, with the Stalker seeming to be the "base organism" that the other two forms mutate from. As implied by the name, Pure Forms are not be the products of a biological host, but rather conceived entirely of the Flood like the small Infection Forms; and being that they also differentiate from their parasite-ridden counterparts in that they are not made out weak, rotting flesh- but a hardened carapace of of recycled/recompiled bones and biomass that you cannot dismember or "sterilize" like you can with the parasitic Combat Forms, even with weapons as powerful as the Flamethrower.