if you're going to ask a question like this please provide more information as to the context, otherwise I cannot help you.
also, if you're just confused as to what that question means, it's basically saying
"how would you describe the way that these characters have changed"
and you could be like
"____ has changed in the sense of...", repeat
or
"they have changed a lot because that they have all matured, especially due to when they experienced ______"
