Which character has been your favorite to write? Which character challenged you the most? Answers can include characters from Rooms too not just YA.
I don't know about the MOST, but the ghosts in ROOMS were definitely a challenge. Because they have no physical bodies, I had to make sure their personalities were very carefully delineated.
My favorite character is probably Bundle the ghost from Liesl & Po. He's an adorable cat/dog and just the most lovable thing I've ever written.