Hubris (ὕβρις) was not a mythological figure but a central ethical concept in ancient Greece.
Excessive pride, arrogance, or overconfidence that leads a mortal to transgress divine boundaries—acting as if equal to or above the gods.
The gods (especially Zeus) punish hubris with nemesis—inescapable retribution, often ironic reversal. The tragic arc: koros (surfeit) → hubris → ate (blind folly) → nemesis.
Hubris enforced cosmic order (dike) and human moderation (sophrosyne). Tragedy taught citizens the danger of overreach—political, military, personal. It remains the archetype of self-destructive arrogance.