Small but mighty.
Electrons belong to a special group of particles called leptons, which are fundamental, meaning they’re not made of anything smaller. Leptons are like the free-spirited, independent crowd of the particle zoo, and electrons are the most famous of them all. Unlike quarks, which stick together to form protons and neutrons, electrons do their own thing, orbiting atomic nuclei and refusing to be tied down.
What makes electrons so special? For one, they carry a negative electric charge, which means they interact with photons (the bosons of electromagnetism), making electricity, magnetism, and all sorts of tech magic happen. They are also not just particles, they also behave like waves. In the quantum world, they can be in multiple places at once, interfere with themselves, and even teleport (sort of) through quantum tunneling.