Q-Balls are round balls made out of a special energy called "quantum energy". They were invented by scientists to help us better understand the properties of this type of energy. This energy is often used in things like lasers, fusion reactors and supercomputers. Q-Balls are made of a special kind of material that absorbs the quantum energy and stores it. This energy can then be used to power things like lights, machines, and computers. It's like a super-powered battery that never runs out of energy!