Crow Claw
Believing him to be the red man, Ganta attacks the strange inmate, known as Senji "Crow" Kiyomasa, but falls at a disadvantage against the blades he can form with his blood. After learning the nature of his power, The Branches of Sin, Ganta launches a counterattack, though soon realizes he is not the red man, but one of several 'Deadmen' with that power. Crow tries to attack Ganta again, but finds himself weak against Shiro before a special unit appears, tranquilising Ganta and Crow and taking Shiro and Yō to an empty corridor. As Ganta is examined, he comes face to face with Tamaki, who reveals he rigged Ganta's jury verdict to get him sent to Deadman Wonderland before revealing Ganta will face off against Crow in a battle the next day, tempting him with the prospect of coming face to face with Wretched Egg. As Ganta is tortured with footage of what a Corpse Carnival entails, Makina decides to confront the director concerning the mysteries of Block G.
Aired 08/05/2011EP 4 - Crow Claw

Deadman Wonderland
Ganta is the only survivor after a mysterious man in red slaughters a classroom full of teenagers. He's framed for the carnage, sentenced to die, and locked away in the most twisted prison ever built: Deadman Wonderland. And then it gets worse.
At Deadman Wonderland, convicts are forced into brutal deathmatches for the amusement of the masses, the cheers of the crowd drowning out the screams of the dismembered. Even when Ganta befriends Shiro, an unusual female inmate, his dark fate crushes all hope —until he discovers the strange ability to wield his spilled blood as a weapon. Ganta learns his new skill might be related to the murderous man in red and uncovers disturbing secrets that could expose those who stole his freedom. He's determined to see justice served —but first he'll have to fight for his life in a prison that holds a million ways to die.
(Source: FUNimation)