Blue is the result of Jules uploading his mind and it fusing with the Dragon Overseer.
- Possibly jossed. Blue calls someone representing Jules "Dad."
Jules is not a dragon but just role plays one in games.
Every character introduced so far, and every character that has been presented in Lizard Soup's social media is mammalian. The mural painting that seems to elicit a reaction from Blue isn't Guy at all and looks ursine.