Actually, on second thought, I'd reveal the info using pictures that vaguely relate to the newcomer:
Villager, a picture of my house (referencing the house mechanics of AC)
Mega Man, a picture of a boy with a toy gun (Mega Man is a boy, and shoots)
Wii Fit Trainer, a picture of my shoes (she doesn't wear any)
Rosalina, a picture of a stick (she has a wand)
Little Mac, a picture of my Lord of the Rings books (Boxing Ring)
Greninja, a picture of a Japanese beach (Ninjas are Japanese, Greninja is water type)
Mii, a picture of a random celebrity/political figure (you can put them into Smash)
Palutena, a picture of a lightning bolt (Ali Hillis voices both Lightning and Palutena)
Pac-Man, a picture of Bad Anon from Wreck-It-Ralph (Bad Anon is in Pacman)
Chrom, a picture of Arnold Schwarzenegger in Conan the Barbarian (Crom is mentioned in that movie)
Shulk, two sticks forming an X (Xenoblade Chronicles X reference)
Chorus Men/Kids, a wrestler and a male singer in the same picture (referencing the Wrestler from the Rhythm Heaven franchise)
Ok Shulk and Chorus Kids/Men may not be vague enough but I'm very unfamiliar with the franchises so I can't think of things that'd pass off as being incredibly vague hints.