Guardians of the Tree of Life (8)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
cherubim
(Other definitions for cherubim that I've seen before include "Angels depicted as winged children" , "Angelic Children, often winged" , "Angelic beings grouped with seraphim" , "Angel" , "Angelic beings found with seraphim" .)