Masters of the Universe: The Origin of Skeletor #1

An injured Keldor wanders the halls of his childhood home, becoming lost in memories. He recalls playing with his brother Randor, saving Randor from a servant of Hordak, being passed over for king and ignored by their father Miro, and communicating with Hordak. On meeting Randor, Keldor asks for forgiveness and stabs Randor, taking his blood to Hordak. Hordak revives the dying Keldor as Skeletor.