Protagonist
From Technomancer
The protagonist or main character is the central figure of a story.
The protagonist is also often characterized by his/her ability to change or evolve. Although a novel may center around the actions of another character, as in Herman Melville's Bartleby the Scrivener, it is the dynamic character that typically allows the novel to progress in a manner that is conducive to the thesis of the work and earns the respect or attention of the audience. In some stories, there can be more than one protagonist; this ensemble cast cast is popular in television narratives.
The protagonist is often faced with antagonist, or foil, who most represents or creates obstacles that the protagonist must overcome. As with protagonists, there may be more than one antagonist in a story.