The Tragic hero (n.) on the Greek stage was always Dionysus in disguise: Prometheus, Oedipus and the rest are only masks of that one suffering god.
The Tragic hero (n.) is someone we see in perfect clarity and still rejoice to watch destroyed: his actions feel justified, and we are lifted higher when they ruin him.
A Tragic hero (n.) appeared to the aroused spectator not as an awkward masked man but as a visionary shape born from his own enchantment — as Admetus saw veiled Alcestis.
A Tragic hero (n.) in the figures of Prometheus, Oedipus, and the rest is only a mask of the one primordial hero, Dionysus, and that divinity behind the mask is the reason for their ideality.
A Tragic hero (n.) like a Titan takes the whole Dionysian world on his back and so relieves us of it, preparing for a higher pleasure not through victory but through destruction.