In this task, you're given a story (which contains five sentences only). Your task is to find all the characters which are available in the given story.

Sentence1: Fred and his friends gathered around a campfire. Sentence2: They roasted hot dogs and were having a great time. Sentence3: Fred suggested that they tell ghost stories. Sentence4: Fred started by telling a story first to his friends. Sentence5: His friends were so scared that they all went to sleep in their tents.
Friends, Fred