Craig
Craig asked Rick Riordan:

i'm not sure how well i'll be able to word this, but i have always been curious about what your process is when it comes to handling background characters. when you create them, do you give them backstories, last names, etc. or do you roll with a basic concept of them and add on trivia later if the thought arises? for example: clovis/pollux vs. lou ellen blackstone/butch walker (and one might even argue will solace)

Rick Riordan Major characters (like the seven in Heroes of Olympus) I create with backstories first. The characters you mention, yes, even our beloved Will, started out as simply names and developed as I wrote them. Anything that isn't on the page probably hasn't been created. That's why when people say, "what is X's birthday?" the answer is often "I have no idea."

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