Definition
An intervenor is a person or entity who voluntarily joins a lawsuit or legal proceeding because they have an interest in the outcome. Think of them as a third party stepping in to protect their rights or interests. Intervenors can be individuals, organizations, or even government agencies. Their involvement is subject to court approval. They become a party to the case, participating in the legal process. This action differs from being a witness; they're directly affected by the outcome.