I lost my dearest Felix. I don't know how to explain to Batman that his brother, his best friend, is not coming back. I am sure the next week will be difficult for him as well. I just have to try and keep him on a schedule to try and get through it as smoothly as possible. Felix might have been 13 years old, but he did not die of old age. He died of cancer. Rest in peace, Felix. April 3, 1998 - October 17th, 2011.