I loved him from the very start. I mean his laugh and his eyes attracted me first but also his behave in fights are kinda chill. After Babylonia i just understand him more tho. I can feel why he dont like the "new" world and i guess he actually miss Uruk. He even makes himself an Servant back then just to protect it.
Fate/Stay night Fate/Zero And two more but i dont remember the names tho. But i know the two i dk ( where Gil is a Kid and the "difGil") are on Crunchyroll rn. So not just a oneshot and mangas lol