dupe

cat's-paw, mark, target, victim

schlemiel (also shlemiel)

butt, derision, laughingstock, mock, mockery

booby, dodo, fool, goose, half-wit, jackass, lunatic, monkey, nincompoop, ninny, nitwit, simp, simpleton, turkey, yo-yo

loser

blockhead, dolt, dope, dumbbell, dummy, dunce, idiot, imbecile, moron, schlub (also shlub) [slang], schlump [slang], schnook [slang]

counterfeit, fake, forgery, knockoff, phony (also phoney), rip-off, rubber stamp, sham

miniature, mock-up, simulation

reconstruction, re-creation

image, likeness, semblance, shadow

impression, imprint, print

approximation, reincarnation, version

extra, reserve, spare

kid, put on, tease

bleed, cheat, chisel, defraud, diddle, euchre, flam, fleece, gyp, hustle, mulct, rook, shortchange, skin, squeeze, stick, sting, swindle