Crisostomo Ibarra is a central character in the novel "Noli Me Tangere," written by the Filipino author José Rizal. He is a young and idealistic Filipino who returns to the Philippines after studying in Europe. Ibarra dreams of reforming his country and improving the lives of his fellow Filipinos. Throughout the story, Ibarra faces numerous challenges, including corruption and oppression from the colonial government and the Catholic Church. His character represents the struggle for social justice and national identity during the Spanish colonial period in the Philippines.