Tex. R. App. P. 52.2

As amended through August 27, 2021
Rule 52.2 - Designation of Parties

The party seeking the relief is the relator. In original proceedings other than habeas corpus, the person against whom relief is sought - whether a judge, court, tribunal, officer, or other person - is the respondent. A person whose interest would be directly affected by the relief sought is a real party in interest and a party to the case.

Tex. R. App. P. 52.2