Toe joint mechanism of human (a), and of existing humanoid robots

A literature review of sensor heads for humanoid robots - ScienceDirect

Humanoid robot - Wikipedia

Robots that look like humans: A brief look into humanoid robotics

QUESTION- As in the sample picture given below, only

Team in Japan creates most advanced humanoid robot yet

Humanoid Robot UVS Robotics Lab

Toe joint mechanism of human (a), and of existing humanoid robots (b).

2-DoF parallel mechanism in the ankle joint of LOLA

Running-Robot

Mini cheetah is the first four-legged robot to do a backflip, MIT News