The Semitic letter Dâlet probably developed from the logogram for a fish or a door. There are various Egyptian hieroglyphs that might have inspired this. In Semitic, Ancient Greek, and Latin, the letter represented /d/; in the Etruscan alphabet the letter was superfluous but still retained (see letter . The equivalent Greek letter is Delta, ‹Δ›.
.. what's your d?
I decided (with the help of my boys) to do a alpha relaunch wanna guess the theme?