"A Portrait of the Artist as a Young Man," written in 1916, is an autobiography and the first novel of the great Irish writer, James Joyce. It's written in Modernist style. So it can be contain of some category of realism, naturalism, and Marxism which aroused in mid-to late nineteenth century. But it mostly included realistic style because of the beginning date of this literary school. By reading all works of James Joyce is maybe committing ownself to an outstanding trickery world of "chaosmos" ("Finnegans Wake," p. 118.21), which stands for poetic mystery that few writers have achieved. In this study attempted is made to survey the main Protagonist in "A Portrait of the Artist as a Young Man," and "Ulysses," Stephen Dedalus, and its relationship to the author.