INJ has several use cases within the Injective Protocol ecosystem. Firstly, it serves as a medium of exchange within the decentralized exchange (DEX), allowing users to trade various assets on the platform. It also serves as a governance token, enabling holders to participate in decision-making processes related to the development and management of the protocol. And finally, it incentivizes users to engage in the network, rewarding users who stake their INJ tokens or provide liquidity to the DEX.