Giant Robo - Season 1 Episode 25 Drakulon, Creature of Doom

U13, member of the Japan Branch of Unicorn, is on night patrol. At the entrance of a town he picks up a girl who is half frantic with fright. The girl explains that all the people of the town are dead. So it is. The street is littered with corpses. He shouts but there is no response. A door opens. He enters thinking that someone should be inside alive. He finds an old man who introduces himself as a vampire. U13 tries to run away, but his escape is blocked by the girl he had left in the car. The girl now has the vampire look.