Ragna is one of the most powerful individuals in the world of BlazBlue. Having been trained by Jubei, the strongest creature alive himself, Ragna possesses incredible fighting skills enough to take down a squad of the Librarium. Being the human form of the Black Beast, Ragna has incredible seithr powers. His elemental affinity is darkness. In battle he summons parts of the Black Beast to attack such as a pointed jaw or possibly its tail, claws, one of the many heads, its breath, or a lump of seithr, the hide for its skin, and an angelic wing. Which all involve the use of drives and his ability to reap souls. He also has the ability to transform his entire body into a creature of pure darkness to devastate his foes.
His weapon of choice is the Blood-Scythe, a weapon that supplements his ability to steal life force with each strike. The Blood-Scythe initially takes on the form of a giant sword with a giant slab of metal resembling a blade. The weapon can change into a scythe-like weapon to effectively steal more energy from the foe through his Drive, Soul Eater (which involves summoning parts of the Black Beast). One of the main reasons Ragna is hunted down is because of his possession of the Azure Grimoire in his right arm, an incredibly powerful form of Ars Armagus sought out by many which grants its wielder power from the Boundary. The Azure Grimoire enhances the powers of whoever wields it. In the case of Ragna, he enters a more powerful state known as Blood Kain, enveloping him in a dark aura that doubles his attack power at the cost of his life energy. Later onwards the Azure Grimoire downloads Lambda's Idea Engine, removing Hazama's control over it and granting Ragna access to the True Azure.
Black Blood- When Ragna had tried using Shadow Draw for the first time, he had not completely removed the darkness from her. As a result, she gambled on her life as the good Medusa with a pure vial of Black Blood. In order to save her, Ragna played the role of a madman to get the Evil Medusa to give him the vial, which he drank to keep it away from her and keep the Good Medusa safe. The Black Blood, when infecting a person, fills the infected soul with madness and imbues him/her with great power. It can solidify, heal wounds, and can be used as a weapon. The Black Blood, as its name suggests, takes on the shape of normal blood cells, only pitch black in color. Since its primary function is to make whoever it infects into a Kishin, the Black Blood induces insanity in the person who is infected by it. The madness of the Black Blood has different effects, depending on the user. The main purpose of the madness is to erase all fear in the users, which prevents hesitation or weakness of will during battle. It is possible for a person to have his/her blood completely replaced by Black Blood. The madness of the Black Blood can be potent, but with enough strength of will, it can be controlled. However, using too much of the Black Blood's power beyond one's capabilities risks the person being devoured by the Black Blood and the insanity it produces. If a person manages to control the Black Blood, he/she has full control of the abilities the unique substance offers. One of the Black Blood's properties is that it can hyper-densify to the user's will. When a user is cut and the Black Blood bleeds out of the wound, the user can will the Black Blood to harden and take on the shape of sharp objects, such as blades or needles. This is used as a counter-attack. It can also take on the form of a protective armor for the body. However, without the user's will, the Black Blood does not harden, meaning that this property is not an automatic function of the Black Blood. The Black Blood also grants the user almost complete invulnerability. The Black Blood can harden the entire body, making it impervious to slashing or crushing attacks. If the user is wounded, the Black Blood can harden and staunch the wound, preventing it from bleeding and healing the wound incredibly quickly. A great amount of strength is needed to break through the user's Black Blood, but it is possible to do so. The user's speed and strength is also enhanced by a great deal when using the Black Blood. This makes the user a formidable opponent in battle. The Black Blood also has a speculated infectious property. Black Blood can very easily be infected from one person to another. The weakness of Black Blood is that it can be disrupted by the opponent using their own energy and sending it through the user's body.
Hell's Fang- Ragna dashes at the opponent with his hand engulfed in darkness.
Inferno Divider- Ragna leaps upward in a spiraling motion while uppercutting with a sword slash hilt first.
Gauntlet Hades- Ragna hops into the air and delivers a fierce, spinning downward hand swing of darkness to the opponent. Hits overhead and makes Ragna airborne.
Dead Spike- Ragna releases dark energy from his sword in the shape of one of the Black Beast's heads.
Blood Scythe- Ragna flies forward while circle-slashing with his Blood Scythe downward. Steals health and hits overhead with a ground bounce effect on midair foes.
Beliel Edge- Ragna brandishes his sword, then does a diving stab downward. Multi-hitting dive attack.
Not Over Yet- Ragna picks his opponent up off the ground and punches them in the gut, where they crumple to the ground.
Carnage Scissors- Ragna performs a very fast, dashing sword strike, then releases two crossing spikes of dark energy (hence the name "scissors") from slashing the ground with his sword. Covers a lot of ground very quickly, but the invincibility is very short.
Blood Kain- Ragna activates the Azure, and body emits a black aura. This enhances all of Ragna's Soul Eater moves, greatly increasing their hitbox as well as improving their damage, health drain and untechable time.
Devoured by Darkness- Ragna's hand turns into a claw of the Black Beast as he snatches the opponent, lifts them up over his head and bombards them with dark tendrils, dealing a total of 70 hits. The start-up for this Distortion Drive is rather slow and easy to counter-poke, but Ragna regains a massive amount of health if he connects, making it an incredibly rewarding desperation attack.
Black Onslaught- Utilizing the power of the Azure Grimoire, Ragna strikes the opponent, then turns his sword into a scythe and slashes the opponent repeatedly before turning into an embodiment of the Black Beast itself, with a single black demon wing on his left side, draining their soul almost entirely before disintegrating them with a final stab.