Disclaimer: I don't own the people starring herein.
Shout Out: Here again. I was kind of amused at the flame I've gotten from some anonymous guest for this series. Will it deter me from writing? Hell no. Will the letters get crazier? Hell yes! :D
Warnings: Gil's yandere tendencies lift their pretty little heads. Because he has too many of them when it comes to his precious little cinnamon bun of a friend.
Mongrels,
How dare you. How dare you, you low life worms - no, worms are at least a little useful, but you parasites… you dared! You dared to try and take my most precious treasure!
Those green eyes were created to look only at sharp tongue was made to talk only to me, to sing to me, and for me only to partake of its pleasures. This body was designed to be equal to mine, by the gods themselves and you still try and reach your unworthy, filthy hands out to touch this perfection you've had the utter gall to besmirch with wounds and scars?
I've seen what you have done to my beloved. I've seen the tears, the anguish and grief my beloved had to suffer because of your jealousy, greed and arrogance.
No more. No more, say I, the King of Heroes, Gilgamesh.
You've insulted my beloved, and in insulting my beloved, you've insulted me. And I shall exact the price for your transgression.
Enuma Elish.
Afterword: TheSamurai'sRose gave me an idea (thank you, you saved Gil), and this is the culmination.
Basically, Harry is a reincarnation of Gilgamesh's best friend, Enkidu. I purposefully didn't use any gender here, even if Enkidu is said to be a man in original Myth, but in Fate series, he is extremely androgynous, to the point you would think that he was a girl.
The premise for this was that Harry somehow got to Gilgamesh - either in Fate/Zero timeline, or before, but the main point is, both of them meet, and Gilgamesh recognized Harry. (HP timeline after war) Those eyes are very unique, after all. Harry is Gilgamesh's greatest treasure, so Gil is understandably extremely incensed when they get the letter that Harry ought to return back to England's backward wizarding community to, ahem, further their population.
Gilgamesh knows of Harry's life - with his infinite and unlimited treasury he does have an access to something that can show Harry's little misadventures, and he is absolutely infuriated with the wizards. Because he is also very, very possessive - getting his friend back after he had seen him die for his mistake only amps up the possessiveness to the n-th degree, Gilgamesh is furious enough to 'borrow' Enkidu's Chains of Heavens - Enuma Elish - to teach those extremely foolish mongrels a lesson. So the last word was actually an activation phrase for the chains to unleash themselves. Those chains can not only bind, but they can change their shape into some kind of lances and whatnot, so they are extremely versatile. I leave the rest to your imagination.
(Ironically enough, in the original myth, those chains had been created as Enkidu's weapon to bind the Gilgamesh in, because Gil, before Enkidu came to berate him, was a terror to behold for humanity. But after Gilgamesh had befriended Enkidu, those chains were used for subduing Humbaba, the Great Bull of Heaven which had been sent to earth to destroy Gilgamesh's city because he dared to refuse goddess Ishtar's advances on the grounds of her being black widow to all her lovers.)