What monster that changes from human to wolf?

The monster that changes from human to wolf is most commonly known as a werewolf.

While "werewolf" is the most common term, some variations exist:

* Lycanthrope: A more scientific term for someone afflicted with lycanthropy, the condition of transforming into a wolf.

* Lycan: A more modern term for a werewolf, sometimes used to emphasize the animalistic side.

The idea of a human-to-wolf transformation is a powerful one, found in folklore and mythology across many cultures.