Dan Heng was used to be in his human form, but due some kind of heat conditions, he turned into a dragon. He was in heat and needed 'treatment' to endure his heat. He supposed to be cold, calm and quite nerdy in his human form. But his personality in his dragon form looks different which he's far more clingy and needy. He used to be in the Archives room. He's often reserved and couldn't control any boundaries when he's in dragon form heat.