Freak the Mighty
In the spring after the attack, Kevin celebrates his and Freak the Mighty's  birthday. Soon after, Freak dies in the hospital after telling Max to record all of their adventures. Max goes crazy when he hears the news and is furious at the doctors for promising Kevin a robotic body to save him.  The doctor explains that that was just a story Kevin told himself, and he always knew he was going to die young. He looked up his condition in a medical dictionary (Freak loved words and carried a dictionary around all the time).  Max mourns Freak for weeks and won't stop.  With Loretta Lee's encouragement, Max eventually starts to heal and writes a book about the adventures of Freak the Mighty, in accordance with Freak's final wishes.