- last post: 01.01.0001 12:00 AM PDT
Firstly, you can see from halo 1 that the ring doesnt kill the flood. Instead, it kills all compatable life forms, stopping the flood from increasing its path of destruction to a greater level. That said, it is a puzzler as to why gravemind would want to stop the flood. A few of my more solid theories (and by solid i mean 'kinda... almost... sort of') are that either gravemind is not a flood form (no plants have been converted by the flood on the halo rings, why would gravemind be?) or gravemind hates his existance as a flood, being far too intelligent to spend time living what is ultimately a pointless existance, or that gravemind is a strange kind of good guy, and was being a hero, merging the arbiter with the knowledge of the humans to stop the key from turning.
~edit~ actually, now trhat i think about it, gravemind was stopping the key from turning, wasn't he? That throws the hero idea out. The idea put in my head thwe first time i saw gravemind was that he's the leader, or the brain of the flood. He's put a plan together to stop the flood being beaten, and that was part of it.