Cherub
A cherub was a supernatural being described in the Bible, explicitly as a guardian of the Garden of Eden. In some religions, a cherub was thought to be a type of youthful angel.

Doctor Julian Bashir referred to Lieutenant Hector Ilario as an "inspired cherub" during his toast to the skillful pilot in 2375. ()  

Later that same year, Ezri Dax referred to Chief Miles O'Brien as having "a certain cherubic quality", following a remark made by Worf about Bashir. ()

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Biblical figures