Which role involves maintaining order in the courtroom?

The role that involves maintaining order in the courtroom is indeed the bailiff. The bailiff is a court officer whose primary responsibilities include ensuring that the courtroom proceedings run smoothly and in an orderly fashion. They are tasked with maintaining decorum, managing the jurors, and enforcing the directives given by the judge. The bailiff's presence is crucial for minimizing disruptions and ensuring that all legal proceedings follow the established protocols.

In comparison, while the judge holds significant authority and is responsible for presiding over a case, their focus is more on making rulings, interpreting the law, and guiding the judicial process rather than solely maintaining order. The plaintiff, who brings a case against another party, and the mediator, who facilitates negotiations between disputing parties in alternative dispute resolution settings, do not have direct responsibilities related to maintaining courtroom order.