 Weighing 54 kilograms and standing 130 centimeters tall, ASIMO resembles a small astronaut wearing a backpack, and can walk on two feet in a manner resembling human locomotion, at up to .ASIMO is the world's only humanoid robot able to ascend and descend stairs independently.However, human motions such as climbing stairs are difficult to mimic with a machine, which ASIMO has demonstrated by taking two plunges off a staircase.