I want to design and build a r

I want to design and build a robot on a wheel chassis. Similar johny 5 or wall-e. With servors to permit simple arm and head movements to give it character and theatrical expression of emotion in its movement. Programmed with autonomous movement via motion and bumb sensors as well as enough voice command prompts to give the illusion of basic AI. Perhaps a servo in the hand to grasp small light weight items. The concept of curiousand playful pet