Virgo

Virgo, "The Maiden" (バルゴ Barugo) is a Celestial Spirit that is one of the 12 Golden Zodiac Keys. Her key is currently owned by Lucy Heartfilia and formerly owned by Duke Everlue.

Appearance
Virgo takes the form of a maid with shackles around her wrists, short, pink hair, and blue eyes. She wears a typical maid outfit, consisting of a black under coat and a white, frilled-trim apron. Whilst she was with Duke Everlue, she was of an extremely tall stature and overweight with a brutish face and two pony tails; Natsu referred to her as "Gorilla Maid". Now that she is under Lucy's care, she has a more typical appearance of beauty with a petite body. In the Lullaby arc, it's shown she can resume her previous form if Lucy requires her to do so.

Personality
Virgo has a tendency to ask whether she should be punished after she has done something, regardless of if it was good or bad, possibly indicating that she's a masochist. This is a little ironic, since she is the Maiden. She is very stiff in her movements and is very loyal to her owner, even so much she changes her appearance for them. She enjoys calling Lucy "Princess"(姫 Hime).

Daybreak arc
During Lucy and Natsu's mission to retrieve and destroy the book Daybreak, Duke Everlue sends the biggest and most brutish of his maids (referred to as the "Gorilla Maid") to stop the duo from escaping with the book. Lucy, sensing the book is not what it seems, tells Natsu to fend off the maid while she attempts to learn the secret of the book. Duke Everlue tries to steal the book back, but when Lucy fights back, he summons Virgo, who turns out to be a maid who was left to fight Natsu, and inadvertently Natsu as well, who hitchhiked with Virgo through the Celestial Spirit World (an unheard act that is forbidden to humans and considered lethal to attempt since there is no air in the Celestial Spirit World). Natsu, with Lucy's help, defeats Virgo.

Lullaby arc
Lucy and her friends are unable to nullify the Magic Wind Wall when Kageyama is severely injured. When Natsu suggests using Celestial Spirits to bypass the wall through the Celestial Spirit World, Lucy rejects the idea while Happy reveals that he has Virgo's key. With Duke Everlue's arrest, Virgo decided that their contract was null and decided to give her key to Lucy. While Lucy is initially reluctant to accept, Happy reminds her that Virgo is capable of digging underground, which may allow them to go under the Magic wall to the other side.

Lucy accepts and is stunned that Virgo, when summoned, takes the form of a petite and pretty maid who apologizes for causing trouble during their previous encounter. Virgo explains that out of loyalty for her owner, she changes her appearance according to their wishes. Lucy suggests that their contract be arranged later and orders her to dive underground to create a hole to allow Lucy, Natsu and the Mages escape the Wind Wall. Upon emerging on the other side, she protects Lucy's undergarments from being seen, though has little regard for her own.

Galuna Island arc
Lucy summons Virgo to use the Celestial Spirit's digging ability in order to create pitfall traps. When Lucy compliments Virgo's ability, Virgo believes that Lucy is punishing her until Lucy shouts that she was praising Virgo. Virgo also makes use of her diving ability to capture the Chief of Galuna Island and save him from being killed by the acid jelly dumped over the village.

Tower of Heaven arc
Note: Events in this arc occur only in the anime and do not constitute canon material.

Oración Seis arc
Virgo helps Lucy get into the Love & Lucky guild by digging an underground passage into the guild.

After Lucy defeats Angel, she and Natsu tumble over a waterfall. When Lucy awakens, she finds that Virgo has appeared without Lucy summoning her and has tended to Lucy and Natsu's injuries as well as provided them with new clothes. Lucy, while grateful, worries that her Magic must be low since Virgo not only came by herself but also used her own Magic power to do so without using Lucy's.

Daphne arc
Note: Events in this arc occur only in the anime and do not constitute canon material.

Edolas arc
Virgo is summoned by Lucy in place of Loke while trying to hijack a flying ship belonging to the Edolas Royal Army. Virgo then explains that Leo was currently out on a date and could not be summoned. Lucy told her to go away after she told Lucy she could only dance as of the moment.

Lucy summons her later again to fight Byro. Virgo first surprises Byro by popping out from underground and punching his jaw. Then, she immediately sinks him down into the ground with an attack called Spica Hole. After Byro consumes his Octopus Liquid, Virgo gives Lucy a Celestial Spirit weapon called Fleuve d'étoiles to use.

Tenrou Island arc
During the S-Class Trials, Lucy summons Virgo to battle Bickslow and Freed Justine. In this appearance, she is dressed in a bikini, to capitalize on Freed's weakness to women in swim suits. As soon as she is summoned by her master, Virgo begins to announce her duties to her opponents, directly extracted from the letters in her name.

However, she does very little and was easily defeated by Bickslow's dolls. She appears later when she provides Lucy and Wendy with clothing from the Celestial Spirit World.

Key of the Starry Sky arc
Note: Events in this arc occur only in the anime and do not constitute canon material.

Grand Magic Games arc
While Natsu and the others are starting to train, Virgo arrives with news that the Celestial Spirit World is in crisis, so she needs their help. Lucy contradicts this saying that humans cannot enter the Spirit World. Virgo says that they can go if they wear Celestial clothing. When they reach there, she and all the other spirits reveal that this was just a trick for them to come to the Celestial World and party for coming back after seven years. They party for a whole day.

When it is finished, she informs that one day in the Celestial World means three months in the human world, thus all the Mages had wasted their three months of training. She later summons herself to the human world and, while punishing herself, asks Lucy to punish her more for not telling her about the time difference. Lucy, however, ignores her and tells her to return home.

Virgo is later summoned by Lucy during the Event of the Games' Fourth Day, Naval Battle, in which the competitors must knock each other out of a giant water sphere. When Lucy is about to be thrown out of the sphere, she summons Virgo and Aries, both in swimsuits. Virgo holds Lucy as Aries creates a Wool Wall that prevents Lucy from going outside the sphere. Both later help Lucy again, holding her hands after a powerful Water Magic spell from Juvia Lockser nearly sends her outside.

Three days later, on the seventh of July, Virgo is summoned by both Lucy and Yukino when the duo attempt to use the combined powers of the Ecliptic Zodiac to seal the Eclipse Gate outside Mercurius. Appearing alongside her fellow Spirits, Virgo immediately flies straight towards the Gate and pushes it with all of her might; The Spirits eventually manage to seal it completely, and by doing so, saves Crocus from further peril. Virgo's assistance is once again requested by Lucy as the latter had been stripped by Zirconis, hurled into the air and ended up reuniting with Natsu before aiding him in devising a plan on how to defeat the Dragons. Before Lucy could finish dressing herself with the outfit Virgo had supplied her with, Natsu had already departed, which instigates a snarky comment from Virgo about Lucy spending too much time picking out her outfit. After Lucy displays agitation towards Natsu's supposedly ridiculous plan, Lucy reassures herself and states that Natsu always manages to find the silver lining in everything, which leads Virgo to teasingly agree and recollect the embrace that Lucy had shared with Natsu while she was naked, which perturbs Lucy.

Magic and Abilities
Earth Magic (土魔法 Tsuchi Mahō): Virgo exhibits great prowess in Earth Magic, such as using Diver Magic and other earth-related spells.
 * Diver (ダイバー Daibā): Like her former master, she can also travel underground as simple as swimming in water. With this spell, Virgo can create holes to either trap someone or utilize as an escape method.
 * Spica Lock (スピカロック Supika Rokku): Much like Juvia's Water Lock, this attack can trap an opponent within boulders, thus restrain them.
 * Spica Hole (スピカホール Supika Hōru): This spell is used to trap and incapacitate an enemy, much like Spica Lock. First, Virgo grabs and throws the enemy into the ground and with the momentum from the throw, a circular hole is created in the ground, resulting in the opponent being trapped in a pit.

Transformation (変身魔法 Henshin Mahō): She also has shown the ability to change her appearance to suit her master's tastes, as seen while with Everlue, she had the appearance of a large gorilla-like woman with formidable brute strength. It is currently unknown if her strength scales with her size or if she has the same physical prowess in her current form, though it should be noted that there have been instances of her attacking opponents with great strength while in her petite form.

Chain Magic (連鎖魔法 Rensa Mahō): With this Magic she can use her chains around her wrists in battles.

Flying Virgo Attack: Virgo, in her gorilla form, launches herself into the air and slams into her opponent, pinning them to the ground.

Expert Hand to Hand Combatant: Virgo has been shown to possess great physical prowess, which she uses skillfully in close combat. In the Tower of Heaven, she easily defeated the guards that were sent after Lucy and the others.

Immortality: As a Celestial Spirit, Virgo cannot die, unless she is somehow forced to stay in the Human World for too long without the chance to return to the Celestial Spirit World, something which would drain her life force and ultimately kill her.

Enhanced Speed: Virgo is seemingly fast as she is able to carry Lucy and catch up to the others quickly while in the 24 hour endurance race.

Equipment
Chains: In the Daphne arc, she used her chains in order to stop one of the artificial creatures that attacked Lucy and Erza. It is unknown if her chains are extendable or not.

Happy in Boots
Virgo appears as Happy's fourth gift to the king and princess of the kingdom along with Cancer.

Welcome to Fairy Hills!!
In the first OVA, Lucy decides to take on a job to find a certain shiny treasure in the girl’s dormitory, Fairy Hills. While Lucy searches for the treasure outside the dormitory, Virgo appears wearing cat ears and a cat tail asking to be punished. Lucy explains the situation to her and Virgo later decides to help Lucy look for it. Virgo begins digging holes outside and under the dormitory to look for this treasure, much to Lucy’s dissatisfaction; she again asks to be punished for her actions.

Fairy Academy - Yankee-kun and Yankee-chan!
Virgo assumes the role of Lucy's maid, preparing and bringing her lunch for her in Fairy Academy. She is also protective of her as seen in her creation of pitfalls all over the school grounds, hoping it would help trap the enemies from Courage Academy that would come to war with the Fairy Academy students.

Fairy Tail Gekitou! Madoushi Kessen
Virgo appears as a playable character in DS Game, Fairy Tail Gekitou! Madoushi Kessen.

Fairy Tail Gekitotsu! Kardia Daiseidou
Virgo appears as a support character for Lucy in the DS Game Fairy Tail Gekitotsu! Kardia Daiseidou.

Trivia

 * Virgo can be summoned from Monday to Saturday.
 *  (Alpha Virginis), referenced in Virgo's technique Spica Hole, is the brightest star in the constellation Virgo. It is also the 15th brightest star in the night sky.