Zabimaru

Zabimaru is Renji abarai zanpakutō which appear on Anime Bleach. Zabimaru is a nue (a baboon with a snake tail), hence his name. Zabimaru's spirit is portrayed as battle-loving and proud, similar in personality to Renji. Both the snake and baboon are capable of speaking, though the baboon is usually the more dominant one. They also have a type of human form, where the baboon is a large breasted woman, and the snake is a young kid. Both are connected by a chain from the child's collar to the woman's waist, though their relation is shaky at best.
Zabimaru's bankai is Hihiō Zabimaru and transforms Zabimaru into a massive version of its shikai form resembling a skeletal snake. Unlike its shikai, Zabimaru's segments are held together by Renji's spiritual power, allowing him to separate and reattach them at will. Even if a segment is damaged, Renji can simply detach it and reform Zabimaru. Zabimaru itself, in bankai form, does not literally "cut", Renji usually catches his opponent with the snake-head of his weapon and smashes his opponent into the ground with it. Zabimaru also gains a special technique known as hikōtsu taihō after Renji becomes more adept with using his bankai. The technique fires a dense blast of spiritual energy from Zabimaru's mouth. He can also use a much more powerful higa zekkō, where all the segments detach and sharpen using spiritual energy

Gunblade (Leonhart)

It is an original weapon, a fusion of the Sword and Gun, thus the name "Gunblade" this weapons work as both a gun and a blade, although this seem to be more of a gun with blades on them, rather than a sword with a firing mechanism.

In Dissidia Final Fantasy, Squall Leonhart's use of the Revolver is refined beyond the normal slashes seen in Final Fantasy VIII, incorporating the use of the gunblade's recoil for a unique combat style. Using the Heel Crush and Rough Divide techniques, Squall triggers a round while holding the Gunblade behind him, the recoil quickly pushing him forward. Using the Solid Barrel and Beat Fang techniques, Squall thrusts the blade into the enemy, only to trigger a round (which also damages the enemy), the recoil of the shot pushes the blade back, where Squall immediately thrusts again, repeating the process several more times.The firing of the Gunblade's rounds induced a tremor in the blade, causing it to deal additional damage to whatever it struck.

Kokutou Yoru

The Black Sword Kokutou Yoru, the strongest Sword which wielded by the strongest swordman in One Piece world (because the most strongest sword is Masamune and the coolest Swordmaster in the world is Sephiroth^_^)It's an ornately decorated, man-sized (6 feet) sword shaped like a cross with a shiny black blade, which is curved at the end. It also seems to generate otherworldly purple streaks as it slices, as seen when he cut down Zoro and when he split Don Krieg's ship in half. Yet as well as having the ability to use it to slice up entire fleets of ships, he is graceful with the blade enough to knock bullets and change their course with little effort.

The cross pendant worn on his neck is actually a small dagger. Though it appears to have no value, in the hands of Mihawk, it was able to defeat Zoro with the slightest bit of pressure, and was able to stab close to his heart.

He's able to attack enemies with powerful slashes made of a huge stream of energy or compressed air (it's unknown yet) like they were giant projectiles, like Zoro's Pound Hou techniques or the different variations of Rokushiki's Rankyaku.