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: Sonny enjoyed watching the waves crash against the shore. Sentence2: He would go there daily to see if the waves got bigger. Sentence3: There was a storm recently that caught him off guard. Sentence4: The waves smashed against the shore and scared Sonny. Sentence5: Sonny did not go back to that place again.
Sonny