Why is the Schwa invisible? Is any of this self-inflicted? How do others contribute to his invisibility?

Are any other characters besides the Schwa invisible? Who is invisible and why? Are they always like this or is it caused by a specific person or event?

Discuss identity in this story. Who is struggling with a sense of who they really are and how do they cope with this? Does anyone change their opinion of themselves, or learn something about themselves in the story? What does the author have to say about people who base their identity on what others think of them?

Is Antsy a good friend to the Schwa? Is the Schwa a good friend to Antsy? Could either of them have done any more to help their friend, and do they sometimes hurt each other on purpose? Give reasons for your answer...