Xeo

Alucard is not just any immortal, but probably one of the oldest and strongest beings known to exist. This vampire, however, is duty bound to the Hellsing family, who acts as the dogs of England's queen, protecting the country from the most dangerous parts of the underground, namely other vampires.

Hellsing, a secret organization within the British government, has long been battling supernatural threats to keep people safe from creatures of the night. They have a secret weapon in the form of an incredibly powerful vampire Alucard.

The series follows Dr. Kenzo Tenma as he pursues a young psychopath/sociopath named Johan, whose life Tenma had once saved.

It is the year 2808. Three convicts are recruited as members of the Cyber Police to keep major criminal activity in Oedo (formerly Tokyo) in check.

Directed by Ootomo Katsuhiro of Memories and Steamboy. In the year 2019, thirty-one years after World War III, the authority of Neo-Tokyo is waging a constant battle against Underground rebels.

Space Dandy is a 2014 Japanese anime series produced by Bones. The series follows Dandy, an alien hunter who is "a dandy guy in space," in search for aliens with his robot assistant QT and a cat-like alien named Meow.