The War God’s Defeats
On the field at Troy, Diomedes — with Athena’s help — drove a spear into Ares; the war god’s scream rang out like ten thousand men, and he fled clutching the wound back to Olympus to weep to Zeus, who told him, "Of all the gods, I hate you most." For the god of war, his win rate is oddly low.
The Affair With Aphrodite
Ares carried on a long affair with Aphrodite, goddess of love. The sun god saw and told on them; her husband Hephaestus forged an invisible golden net and caught the pair in the act, hanging them in mid-air for all the male gods to come and gawk. In the Roman version, Venus and Mars became a respectable couple instead.