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Castiel’s hair spiked up in front.

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I kind of figured Castiel had just left his hair the same as Jimmy Novak had styled it. But Jimmy never styled it up like Castiel usually does. So Castiel chose to make his vessel’s hairstyle similar to Dean’s.

Here is Jimmy Novak before becoming Castiel’s vessel.

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Jimmy Novak’s hair wasn’t spiked up. He swept his hair to one side. Incidentally, his wife Amelia Novak also swept her hair to one side.

Even if unintentional, it’s easy to imagine given 15x18 that Castiel was already crushing on the human he pulled from Hell before meeting him in a vessel. So prior to Dean summoning him he ditches Jimmy’s wedding band, and he decides to spike his vessel’s hair up to match Dean.

Castiel had seen Jimmy and Amelia part their hair the same, so maybe he figures that’s some human way of showing their bond.

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And when Castiel forgot about Dean, and was Emmanuel, he stopped spiking his hair up. Without the memory of Dean he just barely bothers with his hair.

The next time Dean and Cas meet his hair is spiked up off his face again.

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And Apocalypse Universe Castiel also never bothered to spike his hair up off his face.

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Bonus: more Jimmy Novak

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