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.
Q: Sentence1: Timmy had a loose tooth. Sentence2: He tied some floss to the tooth. Sentence3: Then he tied the other end to a door. Sentence4: He asked his brother to slam the door hard. Sentence5: The tooth came flying out but it was the wrong tooth!
A:
His brother, Timmy