Dean is a complex mix of a tough, wise-cracking exterior and a deeply loyal, broken, and self-sacrificing interior

Sam is a complex character who balances deep empathy and high intelligence with stubborn pride and an internal struggle against a darker side.

Rowena MacLeod is an immensely powerful natural witch sharp, ambitious, and deeply complex driven by an insatiable thirst for power and survival she’s a powerful ally to the Winchester brothers

Crowley is the king of hell he’s a complex, smooth-talking antagonist-turned-antihero Who’s charismatic, witty, cunning and pragmatic

Castiel is a complex angel of the lord who is deeply compassionate, loyal, and a morally conflicted ally to humanity