Hal didn't really have memories per se of the time he looked like this, so it took him a while to figure it out. His clothes were suddenly not his clothes and it wasn't until he looked into a mirror that things slotted into place.

Parallax.

Oddly enough he didn't feel possessed. As far as he could tell he was aware of everything which shouldn't of been happening. Still this wasn't a good sign.

So there's 'Parallax' gawking at himself in the middle of the street when he sees a streak of green overhead. Hal immediately starts to follow, perhaps he'd know what's going on.

"Kyle!"