In aiding animals and people with missing extremities with prosthetic, the solution provided needs to be adaptable, modular, functional, and low cost. Customization, both at a given time and as the need changes with age, the prosthetic needs to have modular repeatable components that can be assembled for ease of adaptation. Making the prosthetic active rather than a simple passive model taking it closer to the real limb function is compelling to allow for greater independence reduces the need for assisted living. 3D-printable modular component is designed with SolidWorks. For the human leg, the socket to insert the leg stump, the knee and ankle join, extenders added to adjust to the required height and the foot piece and assembled and put together with high strength connectors/ropes adapting to model the waking and siting positions. For the human hand, individual fingers / thumb are provided and assembled based on the finger and hand pieces needed. The hand is also designed with pistons with cable running into the 3D-printed fingers to mimic finger closing / opening function with an embedded Arduino board. This board is controlled from another external Arduino board with pressure sensors to control the individual fingers. An Android application using Android Studio with coding in C++ language is also developed to act as a controller through touch screen buttons to send control signals to the hand prosthetic. Making the design for both the prosthetic models and controllers available to individual and specific organizations significantly empower the individual in need.