Antagonist and protagonist analysis

Protagonist
The protagonist of a thriller sequence is the main character around whom the film revolves. Often seen as the 'hero', the protagonist often has some kind of problem to overcome or ends up in a situation from which he must get out. These problems, more often than not, and instigated by the antagonist.
The protagonist in our thriller was the main character who was having the nightmare. He follows the girl around his nightmare and whiteness the antagonist take her away, he then follows.

Antagonist
The antagonist is usually the 'arch enemy' of the protagonist. This is usually and most often another person but it can also be a group of people or something else, depending on the situation but in any case they will oppose the protagonist.
The antagonist in our project was the man in the dream who kidnaps the girl. He is the antagonist as he is taking the child from the main character and then he murders her, obviously having a negative effect on the main character.