Somehow Zen make me think of Gilgamesh from "For Glory! For Equus! For Epicness!"

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Which part of him resembles Gilgamesh?

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The love of music for one... And the multiple weapons dispersed around the world as second with a armor covering her for third, even if Gilgamesh can take out his armor.

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Wait her? Zen’s sex/gender is unknown but to be assumed to be male.

I did get inspiration from other displaced stories before making this but trust me, in level of power and abilities, Zen is on a whole another tier

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Sorry, I use to much the 'her' because 90% of the characters in FIM are female