Ares

The Isanity of Are
Ares' insanity was first seen and noticed by Athena in the first God of War when he had Kratos destroy a vilage dedicated to the Goddess of Knowledge, which was the same village that Kratos killed his family accidently and swore to himself to the servatude of Athena and the other Olympians as long as he was given the chance to kill Ares for his manipulation and have his nightmares taken away.

The Fall of an Insane God of War
Ares' fall came by the hands of Kratos, his once known champion, with the help of Pandora's Box, Zeus' Fury, Artemis's Blade, Poseidon's Rage, and Army of Hades. After the first round of fighting, Ares sucks Kratos into a second round to where he must fight clones of himself to save the family he himself slaughtered. After succeeding, Ares rips the Blades of Chaos and all the magic he had collected from Kratos' body and attempts to kill the beated and worn-out Ghost of Sparta. But Kratos recieves one last gift from the gods; The Blade of the Gods. With it, Kratos kills Ares and takes his rightful place as the new God of War.

180px-Tomb_of_ares-1-.jpg Tomb of Ares
In God of War 3 after fighting one or two hippoccampi, Kratos finds himself int he tomb of Ares. Ares' remains are incased in solid ice forever.