This thought just came to me at random but for the Equestria Girls version of Derpy what would her last name be, it obviously can't be Hooves like it is for her pony version so yeah I want your thoughts on this?
I would say Hooves but we don't know what kind of names they have in that universe. It could be Andersson or something like that. Or it could be Smith. Her last name could be anything.
Actually, we do know what kind of names they have in that universe. The exact same kind of names that they have in Equestria. Even the horse puns in place names are the same. (Canterlot/Canterlot High)
I'm pretty sure it will be Hooves even if she is human or not. Like, for example, they said Twilight's last name and still was the same in the human world.
In the Riseverse, the names you are familiar are "Chosen Names", nicknames that the humans chose for themselves. Later Riseverse stories reveal the real names of several characters, but the real name of Human Derpy Hooves (or who her parents are) is yet to be revealed. In fact, a lot of plot points and plot twists in the Riserverse come from revealing the real names of the humans. The only exceptions are Human Trixie (her real name is Trixie Tamiya), Principal Celestia (her real name is Lauren Celestia), and Vice Principal Luna (her real name is Hermione Luna), who don't have Chosen Names (althought Hermione Luna was known as "Nightmare Moon" when she was with the Changeling street gang, but she dropped that name once she quit the gang, reformed and became Vice Principal of Canterlot High).
The universe where my writings take place. What? If we can discuss "Cupcakes" and "Rainbow Factory", then I can bring up my writings into a discussion. Trixie's last name is Tamiya because she is the daughter of Toraichi Tamiya, born in the U.S.A. after Toraichi moved there alongside Belldandy, Keiichi, Skuld, Sayoko and Megumi. Also, the term "human" is used loosely here, since Sunset Shimmer's Earth counterpart is Yukina Morisato, the demigoddess daughter of Keiichi and Belldandy, and Fluttershy's Earth counterpart is a regenerated Jenny, the Doctor's daughter, who later becanme a goddess/Time Lady hybrid and was adopted by Belldandy and Keiichi.
Well not really. Your writings aren't Canon, don't act like it. Nobody even mentioned "Cupcakes" or "Rainbow Factory" in this thread.