Do the letters of the alphabet have official spellings?

I think he meant that that’s the case in Greek. He indicates in his last sentence that it’s not the case in “our” language.

Zee is Zed’s evil twin from Power Rangers.

Yes, I meant to specify “in Greek”, but I see on re-reading that that I somehow omitted that. And I’ve seen the Harris cartoon, too (I have a book with that one in it), but I didn’t feel inclined to either find it online nor to transcribe it.