Ares had a lot of siblings here is a list of them Aeacus, Angelos, Aphrodite, Apollo, Artemis, Athena, Dionysus, Eileithyia, Enyo, Eris, Ersa, Hebe, Helen of Troy, Hephaestus, Heracles, Hermes, Minos, Pandia, Persephone, Perseus, Rhadamanthus, the Graces, the Horae, the Litae, the Muses, the Moirai; his parents where Zues and Hera.
His weapons/Symoblos are the sheild and spear
He is one of the Twelve Olympians. Some of his symbols include the sword, spear, shield, helmet, chariot, dog, boar, vulture, and flaming torch.
Ares most likley probably would have looked very musular since he is the god of war he also probably wears Armor.
The most popular myth involving Ares was his fight with Hercules. Ares' son Kyknos was infamous for waylaying pilgrims on their way to the oracle at Delphi, and so earned the displeasure of Apollo, who sent Hercules to deal with him. Hercules killed Kyknos, and a furious Ares engaged the hero in a fight.