Complex sentence: A trivial fact is that he always names a character "Uzun İhsan" (literally "Ihsan the Tall") in his every work, which is a reference to himself, as he is a tall and imposing figure, with height over six feet four.
Split into simpler sentences: A trivial fact is that each of his books have a character named "Uzun İhsan" (meaning "Ihsan the Tall"), which is in fact a reference to himself. Anar is a tall and imposing figure, with a height over six feet four.