Lady Lulu Quackerville appears in the Bert and Ernie's Great Adventures episode "Ernlock Holmes." An aristocratic lady with an English title (but a Southern accent), Lady Lulu seeks the assistance of detectives Ernlock Holmes and Dr. Bert Watson in finding her missing duckling, Lily. Her estate comes complete with fog and leafy duck-themed topiary. Lady Lulu's last name is a reference both to ducks and to the Sherlock Holmes novel The Hound of the Baskervilles.