|Name|| Mrs. Butters|
|Episode(s)||15.14 Last Holiday|
Mrs. Butters is the name given to a wood nymph by the Men of Letters, as her true name is incomprehensible in any human language. At some time during World War II, she was captured and experimented on by the Thule Society before being found by the Men of Letters after she massacred over 200 Nazis. After learning that wood nymphs can become violently hostile when their home or family is attacked, Cuthbert Sinclair offered Mrs. Butters a home at the Men of Letters Bunker, to protect and take care of its members, which she gladly accepted.
When the Men of Letters did not return from the initiation of Henry Winchester and Josie Sands in 1958 (because unbeknownst to Mrs. Butters they were all killed in the massacre led by Abaddon), Mrs. Butters put herself and the Bunker in stand-by mode, where she remained until she was released in 2020 by Dean Winchester when he rebooted the Bunker's system, freeing her.
- Mrs. Butters is not a fan of blue language.