Not to be confused with the Titans, the Giants were born together with the Furies from Gaia, the Earth and Ouranos when he was castrated.
The Giants were as tall as mountains and so strong as to be unbeatable. According to Apollodorus, their shaggy hair drooped from their heads and chins, and they had dragon scales on their feet.
The mightiest Giants were Porphyrion and Alkyoneus. Alkyoneus could remain immortal as long as he fought in the land of his birth, Pallene, in the region of Thrace. A bold troublemaker, Alkyoneus dared to steal some cows owned by the Sun.