Interveners are individuals or groups that step in to assist or influence a situation, often in legal or social contexts. They may join ongoing cases to provide additional perspectives or support for one of the parties involved. This can help ensure that various viewpoints are considered, especially in complex matters. In legal settings, interveners can be crucial in cases involving public interest, such as environmental issues or civil rights. By participating, they can help protect the interests of affected communities or advocate for broader societal concerns, ensuring that decisions reflect a wider range of opinions and needs.