In the AI application era, the agent (Agent) is at the core of the application, and multi-agent collaboration (InterAgent, or IA) is at the core of the technology. Large-scale agent collaboration is the inevitable path to building economically valuable agent economies. Currently, the market generally refers to this kind of multi-agent cluster as Swarms, which means a large swarm of insects or people moving in groups. However, we prefer to use another term to describe it — Legion. In 2017, Marvel launched a superhero TV series called Legion, describing a}