Is this Spiderman’s foe Venom in real life? Video of a slimy, mucus-like extraterrestrial creature has gone viral online. It could neither invade nor kill a human. It is in fact a soft miniature robot invented by CUHK Faculty of Engineering that performs medical tasks inside human body. This viscous robot behaves like an octopus to enclose and grasp small objects and moves through the narrows of the human digestive system under magnetic control. Now further tests are needed to ensure that the body will be absolutely protected, leading to human tests in five years.