A Barian (バリアン Barian), spelled Varian in Japanese is a being originating from the Barian World, a high-energy world in the Yu-Gi-Oh! ZEXAL anime. The Seven Barian Emperors is a group made up of Barians. The Fearsome Four of the Dark Dueling World is a group made up of mostly Barians, with the exception of Mr. Heartland, who serves as the group's leader.
Appearance & Physiology
While in the Barian World, Barians appear humanoid, though they conceal themselves in cloaks.
The Seven Barian Emperors, formerly human, resemble humanoid beings with unnatural skin color, such as purple or red. Furthermore, all of them have what seem to be crystals and/or armored-like plates on their bodies, such as Mizael's face resembling a mask, Girag's face resembling a helmet, and Dumon having gems on his body. Also unlike humans, they seem to lack certain organs such as mouth or nose, or perhaps those organs are otherwise not seen; despite this, their senses appear unhampered, as is their ability to speak. They also have crystals for hearts.
In contrast, other Barians, such as those belonging to the Fearsome Four of the Dark Dueling World, take on less humanoid forms depending on the different species based off of them, like a cicada, a jellyfish, and even a mosquito. They can even exist in the real world in their true forms, an ability that only Dumon had demonstrated before the introduction of the Barians belonmging to this group.
"Chaos Xyz" monsters evolved by Rank-Up-Magic have Barian energy within them. Vector says that these cards are of Barian origin when explaining to Yuma and Astral why they couldn't use ZEXAL, taking Utopia Ray V into account.
Each Emperor of the Barian World is loosely named after one of the stars of the Big Dipper: Dumon after Dubhe, Alito after Alioth, Mizael after Mizar, Girag after Merak, Vector after Phecda, Nasch after Benetnasch and Merag after Megrez.
AbilitiesWhile on Earth, Barians are forced to take on a human form, not knowing that this form was the one they had from the time they were humans, although Dumon apparently only needs to do this if his Baria Lapis is damaged. The only major resemblance between both their Barian and human form is their hair, which only changes color. As energy beings, they have remarkable tolerance to pain, even in human form; Girag was able to take a punch in the face from Fender without so much as a flinch. Dumon, Semimaru, Kurage, and Mosquito Ninja, however, can retain their true Barian forms on Earth. 
Barians can travel from the Barian World using Overlay Networks and can also utilize the ability on Earth, vanishing and reappearing on a whim. Mizael showed the ability to fire energy balls for offensive purposes, though they do not cause lasting damage. These abilities can also be granted to humans. Vetrix, who made a contract with Barians, was able to produce energy balls and use the aforementioned networks to travel.
Barians possess the ability to Rank-Up their Xyz Monsters by the use of "Rank-Up-Magic Barian's Force", which lets them Summon "Number C" and "CXyz" monsters. "CXyz" monsters originate from the Barian World and are produced there as "weapons" to defeat the "Numbers". While in human form, Barians cannot wield them, but they can use "Rank-Up-Magic Barian's Force" to brainwash humans into doing so for them. The Brainwashing effect seems to vary depending on who does the brainwashing. Girag's victims retain their personality but becoming obsessed with serving the Barian world, while Vector's victims are more like sleeper agents, retaining their original personalities until the brainwashing kicks in when they draw "Barian's Force", at which point they become ruthless and sadistic like Vector himself. Alito's brainwashing on the other hand completely robs the victim of free will and personality. Interestingly the Barians themselves are not immune to being brainwashed as seen when Girag brainwashed Vector (though he could have been faking). In addition, if a Barian were to lose a Duel to a person using a "CXyz", they would vanish from existence, just as Astral would if he lost to a "Number".
- The Barians are similar to the Dark Signers in that they were once humans, who died and when reborn, were reborn as either the Barians or the Dark Signers. They all seemed to have a associated monster card as well, and most of them seem to be rivals of members of the main cast.
- ↑ Yu-Gi-Oh! ZEXAL episode 89: "Darkness Dawns"
- ↑ 2.0 2.1 2.2 Yu-Gi-Oh! ZEXAL episode 74: "Attack of the Barians: Part 1"
- ↑ Yu-Gi-Oh! ZEXAL episode 71: "A Trio's Challenge: Part III"
- ↑ Yu-Gi-Oh! ZEXAL episode 97: "Sinister Shadows"
- ↑ 5.0 5.1 5.2 Yu-Gi-Oh! ZEXAL episode 80: "Rivals in the Ring"
- ↑ Yu-Gi-Oh! ZEXAL episode 108: "A Sea of Troubles: Part 1"
- ↑ 7.0 7.1 Yu-Gi-Oh! ZEXAL episode 82: "Sphere Cube Calamity: Part 1"
- ↑ Yu-Gi-Oh! ZEXAL episode 85: "Counter Offensive: Part 1"
- ↑ Yu-Gi-Oh! ZEXAL episode 43: "The Dragon Awakens"
- ↑ Yu-Gi-Oh! ZEXAL episode 81: "The Friendship Games"