Coeus

Coeus, sometimes translated as Koeus, was a member of the race of Titans, precursors of the Olympian pantheon of gods who possessed enormous size and great power.

Description
Described as being one of the fonts of knowledge - and in particular rational thought - Coeus was one of the participants in the decade-long battle between the Titans, led by Cronus, and the Olympian gods who were championed by Zeus. Ultimately defeated, he and his siblings were imprisoned in the Abyss of Tartarus. There, Coeus was apparently driven mad by despair, and broke free of his chains before attempting to escape the pit of damnation. His efforts were ultimately thwarted by the guardian of Tartarus, Cerberus.