About
Originally brought forth through a machine at the Foundation, in the form of the Wise King Gilgamesh following the conclusion of the journey he made in order to obtain immortality which failed, but also was a version who experienced the 'singularity' in which Tiamat had become an enemy of humanity.
He worked temporarily as an agent of the Foundation, though very much destroyed an entire briefing room when he first arrived in a fit of defiance and indignant anger, forcing himself to be placed in confinement for a week or so due to his actions.
Following his release, he functioned as a good leader in groups, though treated his superiors with disdain at best and outright rudeness at worst.
He was eventually put alongside a team to investigate and recover an agent that went missing in the Winchester Incident, though due to things going wrong, he was one of those who lost his life in the weeks that followed.
Gilgamesh at the last moment tried a last ditch effort in order to ensure that all would truly be well following Wei's barrier being broken, summoning himself as a Servant and using his body as the necessary catalyst to make it happen.
However, due to Tages' barrier erasing any memories that had to do with the house going into effect, Gilgamesh, now a Servant, wandered around San Jose now that he officially left the Foundation and cloaked his presence. Then, he did as he pleased, such as buying a few pieces of property, causing fights/trouble, and whathaveyou until the twenty years passed and he regained his memories. Then, with another new team and some familiar faces, including his old-still current flame, he defeated the curse that haunted the Winchester House for now.
Though, saying things were naturally over and easy following that would be a lie...
Especially as following the events of the Winchester House, Gilgamesh would end up going alongside the Agents as a 'failsafe' in order to ensure the elimination of a being who he had foreseen would have enough Determination to bring about the end to all that was. As well as make sure that he cared about most didn't die in the process (now a certain O5 named Solomon who remained his boyfriend, though their dynamic had changed.)
However, W.D. Gaster met his end with the assistance of the Golden King, The King of Israel, and the rest of the Foundation team's efforts, putting an end to that after six weeks of incessant torturous repetition of the first week the group experienced upon entering the Underground incognito. And of course having to deal with another murdergame. He had also discovered, along with the rest, that this man had been responsible for the Concept of murdergames in general.
The events had took its toll on the King of Heroes, even if he'd die before admitting to that, and so he went back to his estate for an entire week or so to recuperate so that he didn't feel inclined to immediately kill the next person who offended him or finally snap. Following that, he was in better condition to visit the Foundation and needle Solomon as well as its members as he liked.