Complex sentence: Born 20,000 years ago in Polaria--a city in the area now known as Siberia--he is the son of Virako and did not originally go by the name of Ikaris ("see below").
Split into simpler sentences: Born 20,000 years ago in Polaria--a city in the area now known as Siberia--he is the son of Virako. Moreover, he did not originally go by the name of Ikaris ("see below").