A plaintiff is a person or entity that initiates a legal action by filing a complaint in a court. This individual seeks a legal remedy, often in the form of monetary compensation or an injunction, against another party, known as the defendant. The plaintiff must present evidence and arguments to support their case during the legal proceedings. In civil cases, the plaintiff typically bears the burden of proof, meaning they must demonstrate that their claims are valid. This role is crucial in the judicial process, as it helps ensure that disputes are resolved fairly and justly within the legal system.