Herakles
It is hard to feel bad for a man that kills his own family. At first when I first read the details given for the slaughter of his family of course I was disgusted in Hercules and couldn't see his side. I see though that it was a fit of madness that he was in and he really actually loved his family. It's sad to me that he will never have his family back all because of what he did. I can imagine It is hard to live with the fact that he is responsible for his own family's death but was not in control of it.