It seems like there might be some typos in your question. If you're asking about what the brain is considered in relation to organs or muscles, the brain is classified as an organ. More specifically, it is part of the central nervous system (CNS) and serves as the control center for the body, processing information and coordinating functions. It is not a muscle, although it does interact with muscles to facilitate movement and bodily functions.
If you meant something else, please clarify, and I'll be happy to help!