Englebert Humperdinck

Englebert Humperdinck is a colleague of Del Stone, and a soundalike of Elvis Presley.

Season one
Under the cover of the steam room in Newark Newark, Fred Jones did an impersonation of Elvis to talk with Del Stone to see what he knew about the Ghost of Rufus Raucous. Del mistook this as his old friend, Englebert Humperdinck, and told "Eng" that Rufus Raucous was still alive, Fred was so surprised he used his real voice by mistake, blowing his cover. Del furiously told Fred, along with Scooby-Doo and Shaggy Rogers, to get out; he also told Fred his impersonation of Englebert Humperdinck stunk.