Gilgamesh was the awesome Sumerian/Babylonian king of Uruk. He is the star of The Epic of Gilgamesh, an epic poem about his adventures and his quest for immortality. Just like Heracles, Gilgamesh gets into lots of trouble and defeats some pretty gross monsters. Unlike Heracles, Gilgamesh is kind of obsessed with immortality. After his best friend, Enkidu, dies, Gilgamesh starts to really worry about his own death. He travels to far away lands in search for immortality. While Heracles doesn't really seem to care whether he's immortal or not, Gilgamesh is all about trying to find the recipe for eternal youth. Unlike Heracles, Gilgamesh never becomes immortal.