[quote]Why didn't sgt Johnson get infected in the first game?[/quote]1. He fought his way out. 2. Augmentations he received from the ORION Program made his neural pathways not immediately accessible to the Flood. 3. The Flood were weak, having not received any new biomass in 100,000 years. [quote]Are moa extinct?[/quote]No. [quote]Who is Ussa Xellus?[/quote]A Sangheili that led an insurgency against the Covenant in its early years. [quote]Is the didact still alive?[/quote]Depends on your definition of "alive". [quote]Is there still remaining flood?[/quote]Yes. [quote]Is there still a remaining gravemind?[/quote]Active in the Milky Way? No. [quote]Is there still a remaining gravemind?[/quote]They utilize ionized particles compressed into plasma via the use of magnetic coils that shape and contain the bolts. [quote]How do A.I.s look how they do?[/quote]They choose an appearance when they are created based off of the personality of the donor.