Pandora Hearts is a manga series by Jun Mochizuki.
Oz Vessalius, one of the Heirs of the Four Dukedoms, has just turned fifteen. His life is rich and carefree, darkened only by the constant absence of his father. At his coming-of-age ceremony, however, everything changes. For no reason that he can discern, he is cast into the prison known as the "Abyss", only to be saved by a "chain" known as Alice, the Bloodstained Black Rabbit or B-Rabbit for short. The mystery begins there as Oz unravels the mystery behind Alice, the Abyss and the strange organization known as Pandora.
Below are the characters found available on the site that cosplayers have depicted.