Have you ever seen bipedal humanoid robots? These two-legged, human-like robots can perform in exhibitions or assist people with household chores. Some bipedal humanoid robots were unveiled in the 1990s and have been improved since then. Both the Sony Corporation, with its Dream Robot, and the Honda Corporation, with its robot called ASIMO, have made innovative advances in the past decade. The recent model is operated by a computer through a wireless network system. Carrying a lithium-ion battery in its backpack, the robot can move freely for at least one hour without recharging. In general, a humanoid robot can walk, jump, and run like a human. It can dance and sing and even do tricks. Also, it can walk up and down stairs steadily on its own. Equipped with visual sensors and force sensors, it can step forward or backward to shake hands with people. What’s more amazing is that it can get on a stage and correctly conduct musicians during a concert performance. Although it can provide entertainment to consumers, a humanoid robot is actually designed to help handicapped and elderly people. It can understand voice commands and carry out instructions. Its size is suitable for helping a person confined to a bed or a wheelchair. Also, it can serve meals, give or receive objects, move away heavy objects, and clean around the house.