In the American sci-fi movie The Matrix, there are thousands of octopus-shaped robots with tentacles. They are called "guards" in this film, which can drift in the air and attack people and spaceships. Although this is a fictional plot in science fiction movies, the hero "Leo" played by Keanu Reeves and his comrades-in-arms * * * resist the attack of robots. But maybe in the future this kind of "guard" robot that can drift in the air will become a reality.

The latest "Jellyfish" robots developed by festo are very similar to the robots in The Matrix. They have many tentacles, which are filled with helium. They look very beautiful and can float in the air like jellyfish floating in seawater. Talking about this robot, festo has also developed another robot-"Robot Jellyfish", which can float in the water.