The M2-M4 Macaco robots were created to emulate both a dog-like creature head (M4) or a morphism between a gorilla and a human head (M2). This was motivated by the simulataneous development by the LegLab of a quadruped dog-like body M4 and a bipedal robot M2. Thus, the M2-M4 Macaco head was created with flexibility in mind: flexible design, manufacture and assembly; and aesthetic flexibility on resemblance with differerent creatures. The design of flexible robotic creatures reduces the cost of development, increases the range of applications for the device, and improves the assemblage process with other robotic devices.