# Main Roles SE person: The basic identity in SE. It is obtained automatically after the player enters SE. Earth Alliance citizen: The Earth Alliance citizens enjoy the benefits and some powers of Earth Alliance. Due to the limited membership, it can be obtained only when there is a vacant space. Acquisition method: Purchasing an Earth Alliance citizenship card or complete specific missions of Earth Alliance. Bionic human: The artificial intelligence robots in SE are divided into many categories according to their purposes. They can be employed by players, can be upgraded and strengthened, and can be trained by AI. Pet: In SE, you can keep various pets, some of which are functional, and some are purely for viewing and playing. Pets can be bred, traded and trained. Earth Alliance Committee: Senior members of the Earth Alliance Committee are the top 101 Oasis citizens holding the most SEG tokens. Committee members are reviewers of initiatives. There are rewards for members participating in Earth Alliance governance activities, which are paid bythe treasury of Earth Alliance. Guardian: Earth Army service members, consisting of players and bionic humans, have the state-of-the-art weaponry and command systems. Players can become soldiers or officers of the Earth Army during their service, and receive salary or mission rewards. The treasury of the Earth Alliance pays salaries and incentives. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://secondearth.gitbook.io/en/play/main-roles.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.