Diomedes

       Diomedes shows very much hubris in book 5 of the Iliad. Hubris means overreaching pride which is exactly what Diomedes had in this book. He was given divine strength by Athena, but he used it poorly. He killed anyone in his path, and even attacked gods. This was a great act of pride, since he was specifically warned to only use his power on Aphrodite. However, he goes on a slaughtering rampage, and pays no attention to the guidance.