Sephiria Arks

From the anime series Black Cat, 27 year old Sephiria Arks (セフィリア アークス Sefiria Ākusu), known as Number I, is the commander of the Numbers and is trusted enough by Chronos to be given total control over killing Creed. Sephiria was one of the few members who were "born for Chronos".

Revolution Arc

Sephiria is commanded by the Chronos Elders to destroy the Apostles of the Stars after the leaders at the world conference are all assassinated.

The Mad Gunman Arc

She and Belze Rochefort visit ex-Number Train Heartnet and ask him to capture Creed alive as a sweeper. The commander presents Train with the bounty notice promising 3 billion dollars for Creed's arrest and leaves him to consider her offer.

Cerberus Arc Keen on utilizing as many resources as possible against the Apostles, Sephiria sends Jenos to recruit Rinslet Walker. She later meets with Rinslet to assess her personality and capabilities. Rinslet is dubious of Sephiria's position as the Numbers' leader and is rather disrespectful at first. After she realizes that she's being put through an evaluation (as well as being mocked by Number I), she attempts to quit. However, Sephiria blithely informs her that she cannot back out of the job and compels Rinslet to work with Cerberus and act as a mole to get inside Creed's base.

Lucifer Arc

After the fiasco that Kranz Maduke and Baldorias S. Fanghini cause in Stock Town, Sephiria asks Jenos to bring Kyoko Kirisaki to her. Apparently Kyoko has turned over a new leaf because of Train and is no longer an Apostle, but the commander wants to be sure the teenager is not deceiving everyone. Using her Christ Saber, she quickly carves a tombstone with Kyoko's name on it and tells her she will be assassinated unless she would like to become a Chronos Eraser. Kyoko refuses because she promised Train she wouldn't kill anymore. Relieved by her answer, Sephiria destroys the tombstone and tells her that she was testing her to see if the promise was actually true.

Alliance Arc

Later, she goes head to head with Creed and stands a pretty good chance against him. She makes multiple hits that are capable of killing the insane man several times over. Unfortunately since Creed has gained immortality through the power of nanomachines, she cannot defeat him. In a desperate attempt for victory she unleashes her ultimate attack. Creed manages to dodge by forcing his Imagine Blade up to level 3. Her attack took up a large amount of her strength and Creed easily takes her down. Train interrupts the battle as Creed is about to kill her. Sephiria appears as Train finally defeats Creed and waves off his concerns about her. Apparently her body has been reinforced to withstand significant damage shortly after she was born.

A Carefree Tomorrow

After everything that happened, Sephiria peacefully meditates.