Rolo Rumkin is a character appearing in every version of the Haunted Mansion attraction except for Mystic Manor. His voice and face are provided by Verne Rowe
In the New Orleans Square mansion, Rolo's tombstone is seen in the mansion's berm cemetery where it reads, "Rolo Rumkin Lived and Died a Friendly Bumpkin". His ghost appears in the graveyard in the form of an animated marble bust as a member of the Mellomen Group, together the spirits sing Grim Grinning Ghosts.
In Phantom Manor, Rolo appears in the Underworld portion of the attraction before Phantom Canyon where he still sings Grim Grinning Ghosts only now with only three of his fellow busts.
He and the rest of the Singing Busts appear in the Graveyard
- His name is a tribute to imagineer Rolly Crump who created the never built Museum of the Weird, he is also the only Singing Bust who serves as a tribute to an imagineer.
- In the Ghost Gallery he is given the name Richard Ravens and was a member of the Yale Glee Club where he became friends with the Ghost Host/Master Gracey and went on to become a songwriter with fellow future-bust Robert Croft. The singers all died at Gracey Manor when a lightning bolt electrocuted their microphones.