Jakoby is 18 years old and literally a snake in human form. And a snake in snake form. It's a shape-shifter thing. He is Lydia's spy, henchman, pet, whatever you want to call him. He kills when she says kill, and gets great joy from causing suffering in others. In snake form, his bite literally sucks the happiness out of others, dementor style. He's a cheerful and sadistic. He's also insane. He has a very light, singsongy voice and a habit of drawing his S's out like a snake. Warning, he's not a good dude. You'll have to say some pretty creepy things as him.