- SpoonGuard
- |
- Exalted Heroic Member
Probably not going to happen, considering that the story lines don't match up. The Rookie enters the scene right when the Chief leaves to go to Delta Halo.
That being said, it would not be impossible to have some interaction with other prominent characters (i.e. Johnson, Keyes, etc). They all made it back from the events of Halo 2 before the MC did, as evident from Johnson recovering MC and Keyes having control over the Crows Nest at the beginning of Halo 3.
So no, I doubt MC will make an NPC appearance.