Manny the Angel (Constantine)

Manny was actually The First of The Fallen.

Supporting Evidence (Spoilers if you haven't seen the series and some comics):

1. Manny is the only character that was a series regular who wasn't originally from the comics.

2. Manny gets very angry at John when John let's Pazzuzu possess him. Could be taken as general repulsion over a demon from an angel and irritation that John is increasing his chances of going to hell, but also could be seen as anger that John is letting someone besides him have possession of John's soul once he's in Hell.

3. He has a special interest/care for John. In the comics (which the show tries to stick closely to), it's said that John is who made Lucifer interested in his job again and despite wanting to drag John to hell, has found himself caring for John, he even goes as far and offers John some form of immortality(? I admit, I haven't gotten that far in the comics, but I saw a post on here once that he did). Manny has broken interference rules to help John and even stayed by his side multiple times to watch over him.

4. It was revealed at the end of the last episode of Constantine that Manny was controlling the La Brujeria. Now, I admit, I don't know if the La Brujeria would follow the First, but I mean, of they were going to follow an angel, it kind of fits that it would be the First.

5. John is known in the comics to have beaten the First multiple times and that the First has attempted just as many times to trick John, but John has always been able to see through them. Manny could be the First's latest trick and John just hasn't seen through it yet or has and is just playing along until the time is right.

Yes, there was a fallen angel in one episode and could have recognized Manny as the First, but the Devil is a trickster and he's more powerful, he should easily be able to hide who he is from others.

Originally posted on personal Tumblr page as Constantine (TV Show) Theory

Image From Constantine Episode 1: Non Est Asylum