This paper identifies key legal issues which are emerging for Mobile Servant Robots (MSRs), a sub-type of Personal Care Robots (PCR) defined in ISO 13482. New cases are likely to be introduced in the market soon even though appropriate and specific binding legal regulations regarding MSRs are missing and several questions need to be carefully considered. The main issues of concern are the need for a concrete and holistic definition of MSR, clarification on the confusion among new emerging ISO/IEC robot categories (especially between boundaries and gaps in machinery with medical device regulations), unclear liability scenarios (avoiding harm, prospective liability, butterfly effect), defining and regulating human-robot collaborations and relationships, ethical issues (mass surveillance, post-monitoring personal data), autonomy (from the robot but also from the user perspective), isolation scenarios, etc. Despite the recent technical advances, there is still a long way ahead and further research is needed to overcome a variety of associated legal and ethical issues which are emerging.