Golden Keys

Gold Keys
[http://fairytail.wikia.com/wiki/Aquarius Aquarius] Spirit mages have the potential to obtain extremely rare Gold Keys, which open the gates of the "Ecliptic Zodiac". According to Lucy, while there are large number of silver keys, there are only 12 gold keys.[6] Each gold key has the Zodiac symbol of the one it is used to summon on it. Only Libra and Pisces has not been revealed. "The Water Bearer" Aquarius is in the form of a mermaid carrying a jug of water. Even getting Loke's key, Lucy continues using and considering Aquarius as her best spirit and her trump card, although she is the hardest to control. When she attacks both Lucy and her opponent are carried away with water. She's also dating the Celestial Spirit Scorpio. Lucy may only summon Aquarius while her key is in the presence of water.
 * Summoner: Lucy Heartfilia, Layla Heartfilia (formerly)

Taurus
"The Golden Bull" Taurus is a minotaur with black and white splotched skin, with a nose ring and a black speedo with a belt. Taurus' preferred weapon is a giant two-bladed axe, which with Taurus' gargantuan strength becomes a deadly weapon. He is also quite a pervert.
 * Summoner: Lucy Heartfilia

Cancer
"The Great Crab" Cancer has a weird crab-claw hairstyle with six crab legs coming out of his back, he also has black sunglasses. He wields a pair of scissors that he expertly uses for both melee attacks and haircuts. Happy thought he would say "-kani"(Japanese for "crab") at the end of the sentence, while in fact he says "-ebi" (Japanese for "shrimp"). Happy was shocked and even asked Lucy to dismiss Cancer. In the anime, Cancer says "-choki" (Japanese for snip or cut) in the presence of Erza; apparently, he is infatuated with her and when Erza suggested he say "-choki" instead of "-ebi" he abides without hesitation.
 * Summoner: Lucy Heartfilia, Layla Heartfilia (formerly)

Virgo
"The Maiden" Virgo has a normal black and white maid outfit, with chained shackles around her wrist. She has the ability to dig holes underground. She is extremely obedient and loyal to whoever her master may be; she will even change her appearance to her master's liking. She also asks her master if they will punish her after she has helped them, even if she has done a great job, indicating she may enjoy it. She has two forms, her "Gorilla" form and her "Maid" form.
 * Summoner: Lucy Heartfilia, Duke Everlue (formerly)

Sagittarius
"The Archer" Sagittarius is a man wearing a horse costume much to Lucy's surprise with a great skill in archery, as setting a machine on flame with arrows is child's play to him. He has many different speech patterns as he tends to say "hello hello" ("Moshi moshi") at the beginning or the end of the sentence and adds "-dono" at the end of Lucy's name.
 * Summoner: Lucy Heartfilia

Leo
Leo "The Lion" appears as a man in a designer suit with his hair in the form of a lion's mane, and is claimed to be one of (along with Aquarius) the most powerful key of them all, as he is the leader of the Zodiac. Leo the Lion is later found to be Loke, and joined Lucy after she helped him return to the spirit world. Loke seems to be able to sense when Lucy is in danger and come to her rescue even without the keys or being called. Leo uses Regulus, a form of light magic which draws upon the power of the main star of constellation, Regulus (lat.: Little King, aka Heart/Paw of the Lion). Loke is also able to use Regulus, but because of his weakened state, he could only channel it through his magic quartz ring. Leo also told Virgo to call him big brother. He seems to have an attraction towards Lucy. In the S-class arc he teams up with Gray Fullbuster.
 * Summoner: Lucy Heartfilia, Karen Lilica (formerly)

Aries
"The Ram" Aries is a timid female. She has horns at the top of her head much like a ram. She has white and fluffy clothes, like a sheep. Her magic deals with using wool attacks to reassure her opponents in combat. She is good friends with Loke, who risked his life trying to free her from her former summoner Karen's treatment.
 * Summoner: Lucy Heartfilia, Angel (formerly), Karen Lilica (formerly)

Scorpio
"The Scorpion" Scorpio is a rough man with a large gun for a tail. He is Aquarius's boyfriend and apparently the two have a happy relationship with each other. Scorpio uses a sand based magic, which he blasts a great amount of sand from his tail. Scorpio strangely refers himself as plural, saying "we" instead of "I" in conversation. The reason being that he views himself as royalty and thus uses the "Royal we" (using we instead of I when referring to oneself to demonstrate that one's own people automatically support any decision that their king makes)
 * Summoner:Lucy Heartfilia, Angel (formerly)

Gemini
"The Twins" Two little spirit twins named "Gemi" and "Mini" that can transform into anyone perfectly and replicate both their thoughts and magic. They were formerly Angel's most used spirit but left her when they recognized Lucy's love for Celestial Spirits. Gemini can turn into whoever they touch and during this time they can also know everything that person is thinking and also their abilities. However they can morph for the maximum time of 5 minutes and also they can only copy 2 people at a time if proceeded they will forget the other one.
 * Summoner: Lucy Heartfilia, Angel (formerly)

Capricorn
"The Goat" is a humonoid goat who uses a lost magic called Human Subordination Magic. He originally had a contract with Layla Heartfilia, but when she started to become physically fatigued she gave away his key. He was a member of Grimore Heart and one of the Seven Kin of Purgatory, when he was being controlled by Zoldeo, but once he was released form Zoldeo's influence Capricorn killed Zoldeo with Regulus. He now belongs to Lucy Heartfilia.
 * Summoner: Lucy Heartfilia, Zoldeo (formerly), Layla Heartfilia (formerly)