In the Manga    The leader of the Chronos Numbers elite assassination squad Cerberus, in charge of the close-range attacks, Nizer wields a pair of tonfas named &quot;Dioskuroi&quot; which he wields with incredible skill, as he shows when he has to destroy a human turned into a werewolf through the Lucifer nanomachines, that can regenerate any part of its body as long as a single piece of it remains - He can even regenerate his head, causing Nizer to need to completely pulverize it. He holds a personal vendetta against Creed Diskenth for the death of Number X, his old partner Ash. He is unable to participate in the attack at Clarken Island due to grave injuries caused by Creed's Imagine Blade and a gunshot from Echidna.    In the Anime    In the attacks in the manga, Nizer suffers grave injuries and is unable to participate in the attack at Clarken Island. However, in the Anime the scene where Jenos reports the Kerberos mission results to Belze does not take place, therefore we might just speculate Nizer is in the same condition as in the manga. Also, in the Anime the scene where Creed kills Ash and injuries Nizer is shown, contrary to the manga where it is just mentioned.    Source: Wikipedia

Train Heartnet is the infamous gunman 'Black Cat', a cold-blooded assassin who works for the organization known as 'Chronos', bearing the mark XIII on his body. Most of his life was surrounded by violence, so Train is quiet, asocial and uncaring. However his life changes as he encounters the mysterious Sweeper (bounty hunter), Saya. Her unique way of living interested Train but tragedy occurs, resulting in Train changing the way he has lived towards the life of a Sweeper with newfound friends Sven and Eve.

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A Brazilian voice actor. Known for voicing Might Guy in Naruto, Scar in Fullmetal Alchemist, Hyouga in Shurato, and Alucard in Hellsing

Train Heartnet, also known as "Black Cat," was an infamous assassin for a secret organization called Chronos...until he abandoned that cold-blooded existence to live on his own terms as an easygoing bounty hunter. But is Train's past as far behind him as he thinks?
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(Source: Viz Media)

Naizer Bruckheimer