- last post: 01.01.0001 12:00 AM PDT
Posted by: opogjijijp
The Flood were first discovered by the Forerunner on Threshold.
Whoa now, how do you figure? In Halo 2, there was a Forrunner base where the heretics were hiding in the upper atmosphere of Threshold. There were also Flood in the base, which leads us to believe that the Flood were being studied or bred there... whoa, whoa, that is interesting!