Eebs

The Eebs, Esmerelda and Esteban Batiste, were the vampires trailing Susan and Martin in Changes.

Biography
They first appeared in Changes after having brought brought the demon (an Ik'k'uox) from earlier in the FBI building to kill Rudolph once they were finished with him. They tell Harry he has three options to save his daughter: gift her to the Red King, kill himself, or be turned into a vampire. Harry stalls them long enough for everyone else to find him and rescue him. The Eebs are then driven off.

Death
They later died at the end of Changes, along with all the other Red Court mebers that were killed by the Bloodline Curse.