A respondent is the parallel term used in a proceeding which is commenced by petition.
Historically, a defendant in a civil action could also be taken into custody pursuant to a writ of capias ad respondendum and forced to post bail before being released from custody. However, a modern day defendant in a civil action is usually able to avoid most (if not all) court appearances if he or she is represented by a lawyer whereas a defendant in a criminal case (particularly a felony) is usually obliged to post bail before being released from custody and must be present at every stage thereafter of the proceedings against him or her.