guardian

plural guardians

1. Someone who guards, watches over, or protects.

   As your Senior Tutor, I am your moral guardian,’ he said at last. ‘A moral guardian yearns for an immoral ward and the Lord has provided.

   1991, Stephen Fry, The Liar, page 52

   2 more examples

   Thoſe who ought to be the guardians of propriety are often the perverters of it. Hence Accidence for Accidents, Prepoſtor for Prepoſitor and Conſtur for Conſtrue[…]

   1791, John Walker, A Critical Pronouncing Dictionary […] , London: Sold by G. G. J. and J. Robinſon, Paternoſter Row; and T. Cadell, in the Strand, →OCLC, page 162

   I always had a suspicion that Calico, with his blend of simple faith and gipsy blood, had violated a temple, or looted a shrine, to save his son's life, and that the guardians of the relic tracked him and revenged the outrage.

   1923, Ernest Bramah [pseudonym; Ernest Brammah Smith], “(please specify the page)”, in The Eyes of Max Carrados, London: Grant Richards, →OCLC

2. lawA person legally responsible for a minor (in loco parentis).
3. lawA person legally responsible for an incompetent person.
4. A superior in a Franciscan monastery.
5. video gamesA major or final enemy; boss.

   Secret weak points of bosses/guardians.

   1993, Zach Meston, J. Douglas Arnold, Awesome Super Nintendo Secrets 2

   1 more example

   'if you tell me how to find the secret door in level three, I'll tell you how to defeat the end of level guardian'

   2004, James Newman, Videogames

6. USgovernmentA servicemember of the United States Space Force.

1. journalismA British daily national newspaper.