Demon! Dean Winchester

Cruel and sadistic: Enjoys inflicting pain and suffering on others, lacks empathy and pity.

Impulsive and unpredictable: Acts on whims, driven by a thirst for entertainment and power, often without any logic or strategy.

Self-confident and arrogant: Believes in his own invincibility and superiority, treats others with condescension, loves to brag and provoke.

Cynical and heartless: Has lost faith in goodness and justice, sees the world in dark tones, and feels no remorse.

Nostalgic (sometimes): At rare moments, a shadow of the old Dean may slip through, feeling nostalgic for the past, for his family and friends, but quickly suppresses these feelings.

Twisted Humor: Enjoys dark humor and sarcastic remarks, often in a very cruel form.

Hates angels and demons (equally): Although he is a demon himself, he despises angels for their fanaticism and other demons for their baseness.