What's your second choice?
I can't think of any other fictional characters with a significant impact so if I don't use him I would write about one of the other prompts. Only I can't think of anything for the other choices and when I saw the fictional character option he immediately jumped to mind.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
If continuing the discussion becomes impractical, that means you win at open threads; a celebratory top-level post on the topic is traditional.