The phrase "loyal guardian" refers to someone or something that is trustworthy, always supports and protects others, and remains dedicated to their well-being. They are reliable and can be counted on for support and care. Full definition
He is a fearless and loyal guardian of his family. (diamondpup.com)
Some dogs seem to be happy just keeping the cushions on the couch warm, while others want to be champion athletes by day and loyal guardians by night. (topdogtips.com)
But it is Michael Caine, loyal guardian / butler who lifts the movie up at the beginning keeps it there. (joanellis.com)