Protagonist

"one who plays the first part, chief actor"
Protagonist is the main character, it who the plot revolves around. The terms protagonist, main character and hero are variously defined and, depending on the source, may denote different concepts. In fiction, the story of the protagonist may be told from the perspective of a different character. An example would be a narrator who relates the fate of several protagonists, perhaps as prominent figures recalled in a biographical perspective. Often, the protagonist in a narrative is also the same person as the focal character, though the two terms are distinct. Excitement and intrigue alone is what the audience feels toward a focal character, while a sense of empathy about the character's objectives and emotions is what the audience feels toward the protagonist. Although the protagonist is often referred to as the "good guy", it is entirely possible for a story's protagonist to be the clear villain, or antihero, of the piece. 
Their aim: After all, the eventual aim of the protagonist is to find a means to die, an aim that requires some fairly serious motivation. It is usually an active aim which is fulfilled with time.


Antagonist force: The antagonist is the character of a story who represents the opposition against which the heroes and/or protagonists must contend. In the classic style of story wherein the action consists of a hero fighting a villain, the two can be regarded as protagonist and antagonist, respectively. However, authors have often created more complex situations. In some instances, the story is told from the villain's point of view; in such a story, we must regard the hero as the chief antagonist of the story!