Train Heartnet

Train Heartnet (トレイン＝ハートネット, Torein Hātonetto), also known as "Black Cat", is a sweeper partnered with Sven. Train is a lighthearted, courageous man who's highly skilled with a gun. He seems to enjoy tormenting Sven and tightening their already small budget as low-paid sweepers by his exaggerated food consumption. Some of Train's distinguishing features are his spiky brown ruffled hair, his catlike slitted eyes, a choker with a tiny bell attached to it, and the XIII tattoo he has on his chest. He has low alcohol tolerance, but loves to drink milk. He is also skilled at disguises, can sleep anywhere, even inside a cramped porcelain vase, and tends to be clueless about most other important things. As a child, he is voiced by Minami Takayama in Japan and Luci Christian in the English dub. As an adult, he is voiced by Takashi Kondō in the Japanese anime and Jason Liebrecht in the English dub.

He is originally part of Chronos, as a ruthless assassin and Number XIII of the group. He wields Hades, an ornate black revolver made out of Orihalcum with a XIII engraved into its side. He is called a "bringer of bad luck", who kills even women and children with little regard. This personality stems from being orphaned after Zaguine Axeloake kills his parents, which cause Zaguine to take Train in and teach him how to kill with effiency. Zaguine eventually dies, and tells Train that he needs to be the best in order to survive. He eventually meets Saya, a carefree sweeper, who slowly changes Train into a "stray cat" that doesn't blindly follow orders. He decides not to kill anymore, and after Creed kills Saya, he leaves to become a sweeper.

Train possesses 20/10 vision in both eyes, which allows him greater sight that normal people. He is an extremely skilled marksman, able to accurately shoot down bullets from other guns, and make a number of bullets hit at exactly the same time. He can also shoot a number of bullet while in the air to accelerate him into a spinning slash, "Black Claw", that leaves three large slash marks. He also uses specialty bullets created by Sven, including the Burst Bullet, which produces an extremely large amount of damage, bullets that freeze opponents, and bullets that paralyze opponents. His gun is made out of the strongest metal on Earth, which allows him to use the gun to deflect bullets and guard against other attacks. When his body becomes infected with nanomachines that cause static electricity, he becomes able to focus the energy into the gun, and shoot energy blasts that amount to a railgun.

Source: Wikipedia