Man, this fight was one of the moments I was really waiting for when the anime aired, and I was not disappointed.

I liked that they went with a design inspired by FGO's archdemon design for Jack's From Hell appearance, and especially how they basically had him looking like the Pretender Card art when he shows up in his "regular" appearance. After all, since he doesn't know who he really is, he can pretend to be anyone, from a cop to a beautiful woman, or even a wristwatch.