Complex sentence: Although he attempts to pass himself off as human, Bast is actually a Faerie; he is over 150 years old and his whole title is Bastas, son of Remmen, Prince of Twilight and the Telwyth Mael.
Split into simpler sentences: Although he attempts to pass himself off as human, Bast is actually a Faerie. He is over 150 years old and his whole title is Bastas, son of Remmen, Prince of Twilight and the Telwyth Mael.