The Minion is on the Werewolf team.
The Minion wakes up during the night phase and sees who the Werewolves are. However, the Minion does not vote with the Werewolves when they are trying to find the Seer. If the Village team accuses the Minion of being a Werewolf when the Magic Word has not been guessed, the Village team still wins just as if they had found a Werewolf. If the Mayor is the Minion, he may lie just as if he was a Werewolf.
You should play as if you're a regular Werewolf, however because you do not vote for the Seer, you would rather the Werewolf team wins by the players not guessing the Magic Word.