This song is a duet from Holy Musical B@man, which was posted to YouTube by Team Starkid in 2012. HMB is a parody of DC’s Batman franchise, specifically taking elements from the original comics and the 1960’s Adam West TV show.

Dark, Sad, Lonely Knight is sung by Alfred and Bruce after Bruce ‘fires’ Alfred upon discovering that he is also Lucius Fox. Bruce lashes out because he feels that he is friendless, resulting in this song.