Secré Swallowtail

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|-|Bird Form=
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==Summary==
Secré Swallowtail「セクレ・スワロテイル Sekure Suwaroteiru」is the servant of Lumiere Silvamillion Clover, prince of the Clover Kingdom and the first Wizard King after she was denied by her family due to her Sealing magic affinity.
She is transformed into an anti-bird named Nero after sealing Lumiere into a statue by using forbidden magic. Five centuries later, she decides to stay alongside Asta after encountering him at the beginning of the Magic Knights Entrance Exam, and is later accepted herself as a member of the Black Bull squad of the Magic Knights.
==Powers and Stats==
Tier: | 
Key: Elf Saga | Heart Kingdom Joint Struggle Arc/Spade Kingdom War Arc
Name: Secre Swallowtail, "Nero"
Origin: Black Clover
Gender: Female
Age: 17 physically, 500+ chronologically (Spent 500 years as a bird, but Tabata lists her age as 17) | 18, 500+ chronologically 
Classification: Magic Knight, Black Bulls member, Anti-Bird, Arcane Stage Mage
Powers and Abilities: Superhuman Physical Characteristics, Enhanced Senses, Acrobatics, Extrasensory Perception, Magic, Aura, Transformation (Can change into a bird), Longevity/Immortality (Type 1), Sealing and Durability Negation (With Sealing Magic, she is able to seal and unseal nearly anything, such as doors, chests, damages, wounds, power etc), Soul Manipulation (She is also able to seal and unseal souls), Petrification (Turned Lumiere into a statue), Statistics Amplification (With Reinforcement Magic and Mana Skin), Flight (With a broom, True Flight as a Bird). Resistance to Heat Manipulation with Mana Skin (Mana Skin allows even the average Magic Knights to run across the Yultim Volcano, a Grand Magic Region which can reduce a human into ashes), Power Nullification with Mana Skin (Mana Skin allowed Noelle to cast Sea Dragon's Roar under the presence of an elf) and Sleep Manipulation with Mana Skin (Leopold was able to overcome the effects of Fragil's Snow Magic, which puts her opponents to sleep) 
Attack Potency: Unknown (Does not have any offensive spells) | Unknown (Does not have any offensive spell)
Speed: Relativistic+ (Kept up with the fight against Zagred) | Relativistic+ (Casted a sealing spell on 70% Vanica before she could react. Later saved Asta from an attack from a casual Half-Manifested Lucifero)
Lifting Strength: Unknown (Not shown to be physically strong), higher with Reinforcement Magic () | Unknown (Not shown to be physically strong), higher with Reinforcement Magic (Stronger than before)
Striking Strength: Unknown (Not shown to be physically strong) | Unknown (Not shown to be physically strong)
Durability: Unknown (Lacks durability feats) | Unknown (Survived a curse attack from 70% Vanica, but it's unknown how much the attack itself focuses on Attack Power)
Stamina: Average
Range: Several Meters
Standard Equipment: None notable
Intelligence: Above Average (She's around 500 years old, has above average battle experience)
Weaknesses: None notable
Notable Attacks/Techniques:
Black Clover Inverse Release.png|Sealing Magic: Inverse Release
Black Clover Eternal Prison.png|Sealing Magic: Eternal Prison
Black Clover Closed Sorrow.png|Sealing Healing Magic: Closed Sorrow
Black Clover Heavenly Prison - Faint Omen.png|Sealing Healing Magic: Heavenly Prison: Faint Omen
*Sealing Magic 「封緘魔法 Fūkan Mahō」: A magic attribute that allows Nero to open and close objects.
*Sealing Magic: Inverse Release 「封緘魔法『逆解』 Fūkan Mahō "Sakatoki"」: Nero holds out her hand and forces another spell to open
*Sealing Magic: Eternal Prison 「封緘魔法『囹永』 Fūkan Mahō "Hitoya Nagae"」 Nero holds out her hands and creates a clear cube around a target, trapping them for centuries. This spell requires a large amount of Mana. After the six-month timeskip, Nero became able to amplify this spell's power with Mana Method.
*Sealing Healing Magic: Closed Sorrow 「封緘回復魔法『憂瞑』 Fūkan Kaifuku Mahō "Urei Tsumuri"」: With an open grimoire, Nero holds out her hands over a wound and closes it with magic. This spell can reattach severed limbs.
*Sealing Healing Magic: Heavenly Prison: Faint Omen 「封緘回復魔法『括牢・幽ノ刻橋』 Fūkan Kaifuku Mahō "Tenrō Kasukano Kizahashi"」: Nero places her hands on someone and temporarily seals away their bodily damage
==Gallery==
Secre Swallowtail Secré Swallowtail Nero Bird Black Clover.png|Nero
File:Nero Secré Swallowtail Secre Swallowtail Black Clover.png|Nero in Black Clover Volume 23 Cover
File:Black Clover - The Black Bulls in a black suit.jpg
File:Noelle and Nero - Black Clover - Yuki Tabata Jump Festa 2022 Illustration.jpeg|Jump Festa 2022 Illustration: Noelle and Nero
==Notable Matchups==
Victories:
Losses:
Inconclusive:
Category:Characters
Category:Black Clover
Category:Animals
Category:Anime Characters
Category:Aura Users
Category:Birds
Category:Black Bulls
Category:Durability Negation Users
Category:Enhanced Senses Users
Category:Extrasensory Perception Users
Category:Fantasy Characters
Category:Female Characters
Category:Flight Users
Category:Healers
Category:Humans
Category:Immortals
Category:Longevity Users
Category:Magic Users
Category:Manga Characters
Category:Petrification Users
Category:Pets
Category:Sealing Users
Category:Soul Users
Category:Statistics Amplification Users
Category:Transformation Users