Its a simple cartoon robotic character, designed and rigged by David for xsi users. This rig was used in TVCs for T-Mobile and worked well for several animators, hope it will serve you well too :)
So now its Maya version Rig for Maya users :)

Thanks to original Maya rigger ALEX for sharing with us. :__

• IK legs setup with smooth stretching
• More controls for feet
• Facial rig
• You can hide/unhide rig parts.