Cyclopes

The Cyclopes were gigantic one eyed monsters. The most famous is Polyphemus, the Cyclops blinded by Odysseus. Hesiod mentions only three (not a race or tribe): Arges (thunderbolt), Steropes (lightning), and Brontes (thunder), obviously storm gods.They were born to Gaea and Uranus. They were also the first smiths. When Cronus came to power he imprisoned the Cyclopes in Tartarus.

Giants

The mythology and legends of many different cultures include monsters of human appearance but prodigious size and strength. "Giant" is the English word commonly used for such beings, derived from one of the most famed examples: the gigantes (of Greek mythology).
In various Indo-European mythologies, gigantic people are featured as primeval creatures associated with chaos and the wild nature, and they are frequently in conflict with the gods.