These are the evil vampire twins to the left is Dr.Morbius he can bite/stratch someone to control their temporal lobe and to the right is destroy lonley when he bites/stratch into somone he can control their occipital lobe
The vampire leader "sir cartier" is using his unlimited control of his hippocampus to think of a plan to defeat the Vampire slayer(the hero)
"My plan is for you two to find people to bit so you can lure in the vampire slayer. Use you powers to control peoples vision and hearing to endanger people on the streets