Possible Clues:

• One out for your blood?
• Biter's viper sliding around before noon
• Bat in centre of Oval, Dickie Bird once blowing his top
• One who’s out for blood?
• Biter's viper messing around before noon
• 'Twilight' character
• Sucker?
• Bloodsucker's anger connected with seductress
• One of the undead in endless primeval dance
• Blood-sucker