The Werewolf is the standard role of the Wolfpack. They have no additional abilities beyond waking up with their team and collectively deciding who to kill each night.
The Werewolf is the primary killing wolf and so, in most games, is highest in the Wolfpack Priority list and they will be the player who dies to things like a Guardian kill or is seen visiting the kill by a Stalker. Strictly speaking the Werewolf is third in the priority list behind Omegawolf and Berserker but these are considered rare roles and not often part of standard games.
Players can turn into a Werewolf by being shifted by the Shapeshifter.
Non-killing wolves revert into a Werewolf if there are no killing wolves alive.
Note that it is against the rules to claim or talk about specific details seen on the screen at night (e.g you cannot describe how it looks to prove you are a role), so the screens below are presented to help players understand the role and how it works. In addition, screens do get updated and may not look exactly as they do here.