A fictional character named for a tune by the group, The Shadows.
The Rise and Fall of Flingel Bunt is an instrumental by the British guitar group, The Shadows. It went to number 5 in the UK. The character Flingel Bunt is an imaginary character invented by the actor Richard O'Sullivan, a friend of The Shadows. The full title was given to the tune after the group had been to see the film The Rise and Fall of Legs Diamond.
https://en.wikipedia.org/wiki/The_Rise_and_Fall_of_Flingel_Bunt