Wights are an unusual species of undead used occasionally by the Scourge. In some cases, wraiths will keep extraordinary enemies alive, preferring to turn them into wights and spread the plague to other "capable" individuals.MoM 150 They most closely resemble a zombie, but their bodies have grown to monstrous sizes and are horridly deformed. It is unknown how this transformation occurred.
With their flat heads, and bolts implanted in their neck, they have a very similar design to Frankenstein's Monster. They are frequently quite intelligent, and seem to retain the mind that they had in life. This cumbersome and beast-like movement combined with human wit furthers the parallel with the monster portrayed in the Frankenstein novel, however it distances the similarity to the popular conception of Frankenstein.
Trivia
Wights share the skeleton and animation models of dire trolls.