Ok ones I found that I think would work: Ciaran and Jack should meet professionally and see how they play together. Azrael - Since Jack works as an ME for the NYPD, they could interact. Naamah well like with Lilith, Jack is playing around with Agrat and wouldn't mind messing with Naamah and creating drama there. Charon is a Coroner, Jack is a Medical Examiner, they should work together sometime. ^_^ Jersey Devil - Other than my own amusement on the tv level... I think two murders who enjoy ripping guts out of bodies would get along well. :3 Jack may even have fed the Jersey Devil with some bodies.