Buso Renkin
The "Buso Renkin" anime and manga series features an extensive cast of characters created by Nobuhiro Watsuki. The series takes place in the fictional Ginsei City, Japan, where a boy named Koshaku Chouno is creating alchemical monsters known as homunculi. During a night, Kazuki Muto, an ordinary boy, is killed by a homunculus, while trying to save Tokiko Tsumura. Feeling guilty, Tokiko, a member of the Alchemist Army, revives him by replacing his heart with an alchemical device called kakugane. The kakugane allows its wielder to form a buso renkin, a special weapon that is the only thing that can destroy a homunculus. With his own buso renkin, Kazuki decides to join Tokiko in the fight against the homunculi. Over the course of the series, they also must to defeat the L.X.E, a group consisting of human-type homunculi, as well as Victor, an entity most powerful than the homunculi.