confidant (noun)

1. In the horror movie, the protagonist confides in her confidant about the terrifying events she has experienced.

2. The superhero comic series features a confidant character who the main hero shares their secret identity with.

3. The epic fantasy novel introduces a mystical confidant who possesses ancient knowledge and aids the protagonist on their quest.

4. In the romantic comedy, the main character seeks advice from their confidant on how to win the love of their life.