Is the "Danbo" doll — whose head can be replaced with a child's head — and its trade considered among the forbidden statues?

It is not permissible to keep dolls if the head has clear features and is attached to them, because their ruling is the same as that of statues, which are forbidden to possess. The allowance is for children's dolls that do not have clear features. It is forbidden to trade in them if it is highly probable that the buyer will attach a head with clear features to them, because it constitutes cooperation in sin, especially if the doll is intended for decoration and photography rather than for children's play. It is safer to always avoid them, as they aid in photographic imaging, regarding the permissibility of which there is disagreement without a recognized legitimate need.