Dark Lady

Dark Lady (ダーク・レーディー Dākuredī) is an experimental 5.0 Generation prototype IS piloted by Edea Crownsworth. It is the first of its kind designed and created by Edea to gain an advantage over the White Knight. It is designated as the most powerful IS ever created, able to take out several IS pilots at once.

Characteristics
Dark Lady is Edea's current Personal IS created and manufactured by Phantom Task as a prototype experiment for her to pilot. A custom made 5.0 Generation IS, it is shown to be very humanoid in appearance, similar to Chifuyu's current IS Kurazakura, but is as tall as the White Knight. The helmet of the pilot is covered in a black helmet with a purple visor to conceal Edea's face. Both the hands and the feet are jaggedly pointed, although the former can be reformed into regular hands. The IS core of Dark Lady, which originally belonged to her first Personal IS Fallen One and modified extensively by Edea through unknown methods, also acts as a life support system for her hidden and severe injuries that she had received from Chifuyu years ago. This also includes a breathing mask installed into the helmet, a fact Chifuyu pointed out during their second encounter.

For combat, Edea prefers to combine many of the IS abilities she has collected throughout her life as an IS pilot in order to maximize their power and effectiveness, often to truly catastrophic levels. In addition, due to her enormous array of stolen One-Off Abilities, she can switch between various powers in the midst of battle, making the Dark Lady unpredictable, and all the more dangerous. Since she has no qualms with killing, she doesn't hold back in fights, and will even target defenseless people, using them as a distraction to her advantage. Edea's incredible prowess and destructive nature rightfully earned her the epithet, "The Dark Lady", conveniently named after her IS.

Dark Lady is also equipped with Phantom Task's version of Fold-Out Armor which is activated on the back of the IS in the form of sharp bat/butterfly wings. While the armor maintains the same functionality as the one created by Tabane, Edea's modification has allowed the armor to not only become compatible with her other One-Off Abilities but also not drain IS energy due to a One-Off Ability that Edea has that allows her to "recycle & reuse" shield energy. This however is a temporary solution as the Fold Out Armor, while lasting a longer period than normal, still consumes IS energy at a faster rate before that energy has a chance to be "recycled & reused". But upon hearing the news of Houki's One-Off Ability which allows her to recharge her energy loss, Edea now desires it so that she can use it for her Fold-Out Armor.

Armaments
Twin Blades (双剣 Futaken): Dark Lady's main armaments when fighting in close combat are two blades that replace her arms. These blades can also produce a purple slicing beam used for range attacks.

Foot Blades (足剣 Ashi Ken): Dark Lady's legs are also used as foot blades for close combat. They behave functionally in the same way as Akatsubaki's foot blades.

Dark Energy Cannon (暗黒エネルギー 大砲 Ankoku enerugī Taihō): Two high-powered cannons that are installed into the palms of the IS' hands, each cannon fires a powerful magnetohydrodynamic weapon which ejects a stream of molten metal at a fraction of the speed of light.

Heat Seeker (ヒートシーカーHītoshīkā): A high-powered missile fires a single projectile that strongly homes in on the target, eventually detonating in a large explosion if it hits the target, the ground, or stays in the air for too long.

One-Off Ability

 * All For One (オール・フォー・ワン Ōru Fō Wan): The most terrifying aspect of the Dark Lady is its One-Off Ability to steal other One-Off Abilities from other IS. It allows Edea to steal other IS pilots' abilities and use them as her own, which explains her consecutive victories over her opponents. Regardless of whether these One-Off Abilities were unlocked or not by the other IS pilot beforehand is irrelevant to Edea. Once she has stolen an ability, unlocked or not, it becomes accessible to her immediately. If it is kept for a long period of time, Edea cannot transfer that stolen ability back to its original user or to another person. She can combine her stolen abilities to create compound attacks with devastating effects. Edea can also redistribute her stolen powers to other people, IS pilots or not. She can also conjure up these abilities without having to deploy her IS but only on specific ones such as the Phantom Blades. It is currently unknown how many One-Off Abilities Dark Lady currently possesses, but given that Edea has had this ability for ten years, it is speculated to be a vast amount.

Stolen Abilities

 * Warping (転送 Tensō): Edea can produce a black and purple mist-like portal that acts as a mode of transport. The drawback is that it is not a coordinate-based and can only teleport things to and from her location, and it only works if it is used on someone with whom she has a close relationship.
 * Impact Recoil (衝撃反転 Shōgeki Hanten): This ability seemingly enables Edea to completely reflect the impact of an attack back to the attacker.
 * Search (サーチ Sāchi): This allows Edea to observe and monitor up to 100 people at a time, including their location and weak points. She stole this ability off of Kanzashi Sarashiki's IS which had yet to be unlocked.
 * Phantom Blades: Edea can conjure up several projectiles in the form of knives and aim at her opponent. There are an infinite number she can conjure up and can on command explode when it hits their intended target.
 * Demon Fangs (鬼牙 Onikiba): Edea transforms her fingers into jagged, far-reaching spikes that pierce a target. These appendages can also be used for offensive purposes by using them to throw people away. Along with a few modifications, they can also forcefully activate someone's One-Off Ability against their will. Whether the target is conscious or not, the Ability will work without fail.
 * Drill Pierce (リルピアス Dorirupiasu): two to six drill-like objects are raveled from Edea's command which can either slam through the ground or act as projectiles.
 * Shadow Eruption (影の噴火 Kage no funka): a powerful One-Off Ability from which the ground quakes and breaks as Dark Lady creates beams of darkness that erupt from the ground.
 * Tangled Rush (もつれたラッシュ Motsureta rasshu): A portal-like One Off Ability used for offensive purposes, Dark Lady can send her Demon Fangs through however many are conjured, dealing damage as the spikes pass by at multiple angles.

SUPER MOVES

 * Enhanced Dark Energy Cannon: Edea combines several One Off Abilities to Dark Energy Cannons, which can flatten entire buildings in less than a second, simultaneously defeat several IS pilots, and even blast Chifuyu, sending her crashing over a long distance. Edea mostly relies on this in her latest fight against Chifuyu.
 * Piercing Beam: With the Fold Out Armor activated on the wings, Dark Lady can turns the wings into projectiles that deals significant damage, bypasses AIC or any defenses. With additional One Off Abilities added, along with Drill Pierce, the Piercing Beam can be conjured into multiple spears and be sent as a volley of arrows. The only downside is that it takes a long time to charge up the attack before the volley is sent.
 * Spear of Longinus: Edea utilizes the strongest combination of Quirk that she currently holds inside her IS to greatly enhance her right arm into a powerful lance, combining several stolen One-Off Abilities, as well as four Kinetic Booster abilities and three Strength Enhancer abilities. This combination of One-Off's is what Edea attempted to use in order to kill Chifuyu. She even added Impact Recoil onto this combination to better his chances of defeating the White Knight.

Standby Mode
Dark Lady takes the standby form of two pieces: Edea's red mask, which she wears most of the time to conceal her identity, and her head ornament. In the case one piece fails, Dark Lady can be activated again via a secondary piece.

Trivia

 * The One-Off Ability is inspired by All For One, a Quirk whom its master is named after, from My Hero Academia