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 is first in the Wolfpack Priority list. This means if the Werewolf is alive, they will be the player who dies to things like a Guardian kill or is seen visiting the kill by a Stalker, for example.
Players can turn into a Werewolf by being shifted by the Shapeshifter.