How does Augustus change as his cancer takes him over? You may quote his actual words. (You may want to draw a comparison between Augustus’s first visit to the Funky Bones Art Park and the one after knowing he’s badly taken.)
“Last time, I imagined myself as the kid. This time, the skeleton.”
At first, Gus was very happy all the time, and nothing, not even cancer, could take all his happiness and willingness of leaving a mark in the world. Then, when cancer takes him over, he starts to feel defeated, and loses all his brightness.
Once again, Augustus plays with figurative language; say why he says the following: “I’m sorry. I wish it was like that movie with the Persians and The Spartans. There are no bad guys...Even cancer isn’t a bad guy really...”
In the movie, there's a battle were there are good guys and bad guys, but in the case of Augustus, there are no bad guys, it's just him and his cancer. Also, as there are no bad guys, there can't be a hero, so Gus would never have the heroic death he would love to have, because, just as he said, there is no heroism in dying from a disease. He says that cancer isn't a bad gay, because it is only trying to survive by living in him.