AlfheimWanderer said:
There is a story where Shinji Ikari plays the role of a Lancer, if I'm not mistaken, though that includes characters from other series as well, with the premise being that the Grail was borked enough to summon not heroes of ancient history, but modern media.
Coincidentally, it can be found in the previews section.
Coincidentally, it can be found in the previews section.