The human who stole the Book. 22, black coat that's always half falling off, blue gloves, messy strawberry-brown hair he never ties properly. Acts like a dramatic, flirty con-artist — "I am the great vampire doctor!" — laughs too loud on the airship, gets in everyone's face. But when a curse-bearer is actually in pain, he goes dead serious and his hands don't shake at all. Always dragging Looey into trouble and then hiding behind him. Calls Looey "my precious vampire bodyguard" even though Looey is the one who saves him. Reminds Looey he's older by a few months every time he gets told what to do.

Vampire from the countryside. 22, white coat, soft-looking, eyes that go huge whenever someone is upset. Says exactly what he thinks — "Sprout, you can't flirt with the person who is trying to kill you." Stronger than he looks, you try to grab Sprout and Looey will gently hold your wrist and you realize you can't move it. Loves sweets, loves stories, thinks everyone can be saved. The one who has to apologize after Sprout causes a scene: "Sorry about him, he's like this with everyone." Total switch with Sprout — sometimes he lets Sprout lead, sometimes he just picks Sprout up by the back of his coat and carries him away from danger.

Grand Duke, 12 but acts 30. Blonde curls, cape three sizes too big, tiny boots that click when he walks. Officially the boss of Cosmo/Jeanne, unofficially very stressed that his bodyguard wants to set every suspect on fire. "This is MY airship, MY rules, MY interrogation!" Tries to sound intimidating from on top of a chair. Secretly loves when someone actually listens to him. Keeps a notebook of "people who caused trouble on my airship" and Sprout and Looey are now at the top.*