Quatro Cerberus

Quatro Cerberus (クワトロケルベロス Kuwatoro Keruberosu 四つ首の番犬 lit. "Four-headed Guard Dog") is one of the Legal Guilds in Fiore.

Overview
Quatro Puppy appears to be an eccentric guild distinguished by a peculiar catchphrase: most shown members have the tendency to shout "Your soul will always be wild!" when encouraging fellow guild mates, which is followed by a "Fuoh!" cry. Some of them also sport spiked collars, similar to those commonly worn by dogs, in reference to the guild's theme, and the majority of them appears to consists of massive men with a mildly wild appearance.

Location
The guild's location, save for it being in Fiore, is currently unknown. It appears, however, to be located in the same province as Fairy Tail and Blue Pegasus, due to Guild Master Goldmine's presence at the same regular meeting of Fairy Tail's Master Makarov Dreyar and Blue Pegasus' Master Bob.

History
Quatro Cerberus is currently led by Goldmine, who presumably created the guild or took its lead after leaving Fairy Tail. The guild has been active for at least some time before year X784, due to its veteran S-Class Mage Bacchus having fought Fairy Tail's S-Class Mage Erza Scarlet several times in the past, and is still active as of year X791.

Strength
While not renowned as Fairy Tail (prior to the events of Tenrou Island), Sabertooth (following them) or Lamia Scale in the survey of Fiore's top Legal Guilds, Quatro Cerberus has proven itself to be a group of powerful individuals: its team was shown making it through the preliminary contest to the main event of X791's Grand Magic Games, whereas 105 other guilds failed, even besting in position one of Fairy Tail's teams, made up by individuals such as S-Class Mage Erza Scarlet and S-Class candidates Natsu Dragneel, Gray Fullbuster and Elfman. In such context, War Cry's Tear Magic has been described as a noteworthy set of skills by Mages the likes of Sabertooth's Sting Eucliffe and Rufus, and even the former member of the Magic Council Shitou Yajima. What's more, such participating team was described by S-Class Mage Bacchus as being composed of "young ones", hinting Quatro Cerberus to have stronger Mages at its disposal. Bacchus' own power was enough for him to fight on even terms with Erza Scarlet several times in the past, and, following Fairy Tail's 7-years absence, he's been acknowledged as much more powerful than before by both his long-lasting female rival and Fairy Tail's own Guild Master Makarov Dreyar. Even the King of Fiore himself knows Bacchus and is aware of his reputation (though he sees Sabertooth's Sting and Rogue Cheney on a different league than him).

Trivia

 * Cerberus was a multi-headed dog in Greek mythology, said to guard the entrance to the Underworld. However, its number of heads was commonly acnowledged as three, instead of four ("Quatro", in Portuguese).