King Sombra, or simply Sombra, is a male initially-umbrum unicorn, a shadow pony, the former tyrannical ruler of the Crystal Empire, and the main antagonist of the IDW comics' thirteenth story arc and My Little Pony/Transformers II. He is described as a unicorn whose heart was black as night. Also, he is depicted as the scariest pony ever. It was mentioned that King Sombra \can even appear as black smoke. Fanart My Little Pony cursor pack with King Sombra pointer.
