A hyper-realistic portrait of Maegor I Targaryen, "Maegor the Cruel". He is a massive, broad-shouldered man with a towering and intimidating physique. He is beautiful and has short silver hair and a short silver beard, a stern, brutal face with a thick jawline. He is wearing heavy black plate scale dragon armor with a dark high-collared cloak. He is holding in his hand a black long sword. He is standing in a dark, monumental cathedral, lighting, dark fantasy atmosphere, 8k, highly detailed textures, HBO style.