1.The teammate is Rob, because mid teased it many times during BoxHead's streams, also followed up with that zombie teaser because FNAB 2 kid got mangled and destroyed.

2. It might even be the man on the phone because it says "the trouble you two have created" and well, he trapped Foxy therefore that's what he did.

3. It might be Jack, a new protagonist, and Rob because it says old and new friends.