Master and Servant

The Vampire Alcott (right) and his ghoulish servant David. David is a womanizer, partly of his own nature, but partly because his master wants him to. If David goes partying, Alcott is his shadow. If David hits on a girl, Alcott is his shadow. He watches his servant and his girl having sex, and when she finally sleeps, he satisfies his sanguine thirst on her.
Apart from that, David is Alcott's bodyguard. Having fought many street fights, David is a good fighter on his own, but his master's blood empowers him further.

Although it is David who his bound to his master by blood, Alcott has developed a strong affection to him. Not only Alcott is sometimes envious, he worries about David, and develops righteous wrath if someone, especially another vampire, tries to harm or insult his "beloved dog".

Image done with Artrage