Dandelo is a fictional character who makes a brief appearance in the final of 7 'Dark Tower' books by Stephen King.
A psychic vampire who drains your lifeforce by laughing you to death. The more you laugh, the more you're dying, without even knowing it. Dandelo lives on a lonely street called 'Oddlane', just off Tower Road.
Tower Road runs on 'The Path Of The Beam', which the hero, the gunslinger Roland of Gilead, a kind of knight in cowboy form, must travel to save the Tower, and so, the multiverse(the Tower is the nexus of all wheres and whens, and it is in grave danger).
Dandelo is an anagram of Oddlane(see above), so I use the capital 'O' instead of a capital 'D'.
Apparently, I've read, Dandelo is also the name of the scientist's cat in the movie The Fly.
I liked the name, is all!