Ari’s surgeon. He’s relatively young and looks like a former jock. Dr. Charles doesn’t buy that Ari saved Dante out of instinct, but he doesn’t press Ari especially hard to get anything more about Ari’s reasoning. He says that there’s more to Ari than Ari is letting on, though it’s unclear if he suspects that he is gay, or if he simply recognizes that Ari is kinder and more compassionate than Ari is comfortable admitting.