How can I remove a grease stain imprinted on wall paper?
It depends upon the finish of the paper. I would try a hot cloth on some hidden part of the paper to see if it damages anything. If it does no damage then try placing the hot cloth over the stain and see if it transfers to the cloth. Be prepared for lots of dabbing. Be careful to test properly though as some paper will shed its surface layer when hot and damp. Others may shed inks.
