Nu-13 is the 13th Murokomo Unit and also goes by the alias "Sword of Hades". She was programmed to terminate anyone she deems as hostile subjects that came near the Gate. Nu -No.13- is also shown to have a split personality, split between an emotionless girl when around others, and a yandere when around Ragna the Bloodedge, though this may be how she was programmed to act. One personality is revealed in her Arcade Mode ending in Calamity Trigger, that of a lonely Saya that just wants to be with her brother again. Nu takes Ragna to the Cauldron by force Nu -No.13- wants to absorb Ragna and have him join her in destroying the world, because she, too, possesses a piece of a creature known as the Black Beast. When Ragna refuses to join her, she decides to take him by force. She was made as a replica of Saya, Ragna's sister. They seem to share some of Saya's memories, though nothing congruous. In the true ending, she tries to merge with Ragna by falling with him into the Cauldron. However, Noel Vermilion thwarted her efforts and saved Ragna's life. Nu dies after falling back into the Cauldron and failing to fuse with Ragna.
Nu is a very lethal combatant on the battlefield. As a Murakumo unit, Nu boasts abnormal fighting abilities. Her Drive ability, Sword Summoner comes in the form of controlling the very fabric of space. She can alter gravity, open up rifts, teleport, fly and summon swords to wipe out her opponents with ease. In combat, it is not uncommon to see a flurry of swords materializing out of thin air and disappearing just as quickly, flying and attacking rapidly from many angles at once. Nu was seen as the perfect fighter due to her excellent ranged and close-quarters combat, and her crazy durability. Her downsides would be that she is a lightweight and is a fast faller.
Why Nu-13 over Ragna?
Ragna isn't a very unique character in fighting games aside from his ability to leach life. His fighting style involves using a buster sword and life leaching, which wouldn't translate very well into Smash. Nu has a very unique fighting style that utilizes both long-ranged and close-ranged combat. Her personality, when shown, is more interesting than Ragna's hotheadedness and very short temper.
Height Class: A bit shorter than Ryu
Weight Class: As light as Ness.
Running Speed: About as fast as Fox
Walking Speed: As fast as Bowser's
Grab Range: Same as Ryu's
Falling Speed: About the same as Falcon's
Jab Combo: Hits her opponent with the small blade on her forearm, then does a scissor kick afterwards. Last of scissor kick has high hit stun and medium vertical knockback.
Side Tilt: Nu-13 takes the blades on her back and slams them down onto her opponent one after the other. Minuscule damage and 1 second of start up, but good horizontal knockback if all hits connect.
Down Tilt: Nu slides the blades on her back under her opponent. Minuscule damage and knockback, but has very low ending lag.
Up Tilt: Nu slides the blades on her back above her opponent enough that they'll hit them. Minuscule damage and decent knockback, but has very low ending lag.
Up Air: Nu spins her blades around her in a full circle motion. Does rapid damage, but little knockback.
Down Air: She shoots the blades on her back down below her. Does rapid damage, but little knockback.
Forward Air: Nu spins the blades to her sides. Does rapid damage, but little knockback.
Back Air: Nu spins a crescent shaped blade behind her that meteors on start up. Otherwise, does as much damage and knockback as Lucas's Back Air.
Neutral Air: Nu punches the air with her arm. Almost no lag, but damage is miniscule. It can be canceled into any of her moves.
Side Smash: Nu opens up a portal and multiple swords come flying around with as much range as Toon Links grab range. Final hit does good knockback. Fully charge this and it becomes her Legacy Edge super, which covers half of Final Destination. High ending lag on both variants.
Down Smash: Nu takes a second then slams a medium sized sword down. Causes great damage and knockback, but has high ending lag. Fully charged it becomes her Calamity Sword super which is an instant meteor.
Up Smash: Nu raises her arm up and swords coming rising up from the ground in front of her. High vertical knockback and medium damage.
Up Throw: Nu holds her opponent above her and two of the blades on her back stab into her opponent. Medium knockback, low damage.
Forward Throw: Nu picks up her appoint and stabs them with one of the blades on her back. Does set average knockback and low damage.
Back Throw: Nu knees her opponent and they fall down. Large hit stun, but damage is very low and knockback is miniscule.
Down Throw: Nu puts her legs together and slams them down onto end opponent. Does set average knockback and low damage.
Up Special: Crescent Saber. Nu spins around up into the air a bit and a small crescent shaped sword appears in front of her. Strong meteor at start up. Average damage and low knockback.
Neutral Special: Sword Summoner. Nu-13 summons a sword from thin air. Where they come out can be changed the movement controls.
Side Special: Sickle Storm. A large blade covering all of Final Destination rolls across the ground. Unblockable, medium damage and knockback, but large start up and end lag.
Down Special: Gravity Field. Nu creates a sort of portal that slows down opponent's that go in it. Distance can be changed depending on how long the button is held.
Final Smash: Sword of Destruction. Gaining invincibility on start up, this is a grab that has the same range as her normal grab. Her opponent gets trapped in a barrier of 8 light beams surrounding them, then a giant sword comes down and instant kills the opponent. If she doesn't grab anyone, the attack fails.
Get up Attack: Nu shoots two short swords to her sides. Small damage and small knockback.
Edge Attack: Nu stabs in front of her with her arm blade, doing small damage and small knockback.
I hope you guys like what I did with Nu for Crusade!