Variations: Kleudde, Kleure

The first notable record of Kludde’s appearance was penned in 1840 in Ternat, by the Baron of Saint-Genois. This back-riding shapeshifter appears in Brabant and Flanders, notably in Merchtem and in Dendermonde, where he lives in the Dendre. In Ostend he is considered a necker or nix, and the flat country knows him as a werewolf. He causes fear and confusion and drinks green pond-water, but avoids crosses and consecrated areas.
Kludde comes out at night in the Flemish mists. He has earned his name from the call he cries while fleeing – “Kludde, Kludde”! As a shapeshifter, he has no fixed appearance, and Kludde has been encountered in the forms of a great black dog with a rattling chain around its neck, a half-starved horse, a sheep, a cat, a bat, a frog, or even a tree. The only constant in Kludde’s transformations is the presence of two dancing blue flames that flit ahead of him. These are Kludde’s eyes.
The pranks Kludde plays are mischievous but not deadly. In the guise of a black dog or werewolf he will jump onto a person’s neck, and vanish after wrestling his victim to the ground. As a horse, he tricks people into riding him, only to gallop full-tilt and fling his rider into a body of water. As his erstwhile jockey flounders in the water, Kludde lies on his belly and laughs loud and long, vanishing only when the victim emerges from the water. As a tree, Kludde appears as a small and delicate sapling, before growing to such a height that his branches are lost in the clouds. This unexpected event shocks and unnerves all who see it, and amuses Kludde.
It is foolish to evade Kludde, as he can wind like a snake in any direction, foiling attempts to outmaneuver him. Trying to seize him is like grabbing air, and it leaves burns behind. He can also make himself invisible to some people and not to others, driving travelers out of their minds as they try to describe the protean creature tailing them – yet when their companions look behind, they see nothing but an empty road.
References
de Blécourt, W. (2007) “I Would Have Eaten You Too”: Werewolf Legends in the Flemish, Dutch, and German Area. Folklore 118, pp. 23-43.
van Hageland, A. (1973) La Mer Magique. Marabout, Paris.
de Plancy, J. C. (1863) Dictionnaire Infernal. Henri Plon, Paris.
Thorpe, B. (1852) Northern Mythology, v. III. Edward Lumley, London.