- “The viera may begin as part of the Wood, but the Wood is not the only end that we may choose.”
The viera have rabbit-like features, including long ears and supple limbs. They generally wear stilettos, possibly due to the shape of their feet, although there have been exceptions. Their trademark long ears grant them exceptionally good hearing, although they are said to have excellent senses overall.
The viera are sensitive to Mist--if they are exposed to high concentrations of Mist, they will go into a berserk state referred to as a Mist frenzy. When experiencing a Mist frenzy, a viera can literally tear apart metal shackles and kill armored humes with unarmed blows.
The viera's ears do not only allow them to hear over great distances, but they also allow them to listen to the voices of the spirit world. They can put this ability to great use, either to communicate with the world around them, or to summon monsters from other worlds. Furthermore, the viera have approximately three times the lifespan of humes.
Viera have silver hair, though those who choose to live among humes often color their hair in shades of brown or black. As with the bangaa, the viera are divided into two main branches: the light-skinned Veena Viera and the dark-skinned Rava Viera. Another sub-branch, called the Feol Viera (or the Exiled), are exists in Final Fantasy XII: Revenant Wings. They are different from normal viera physically, having shorter ears and blonde hair.
Male viera do exist, although they've never been depicted in any of the series, possibly because female and male viera create separate settlements and only communicate with each other if necessary. 
The viera live deep within wooded area, earning them the call "People of the Wood". They have excellent senses, and their hair is always silver. Male and female viera live separately from each other and only make contact and communication when the need arises. Viera have superb eyesight; it is said that they can spot their prey from as far as 10 km (6.22 miles). Their sense of hearing allows them to hear even the slightest sound, which comes in handy if they are being hunted themselves. It is said that the viera's superb hearing allows them to sense changes in the weather and the movement of all living things in the woods they inhabit. Their lifespan is roughly three times that of humes. They grow much like humes as children, but upon reaching adulthood the viera retain their appearance until old age. All viera allies, with the exception of Fran, are weak to Earth.
In viera communities, such as Eruyt Village, there are two jobs the viera can take: Salve-Maker and Wood-Warder. Those who wish to become Salve-Makers must complete the rite of passage of catching the Vorpal Bunny, which appears every seven years. Its tail is used to create Vision Dust, which keeps the viera village hidden from outsiders. However, not all villagers are required to be take either, and only a few choose to.
Having lost their ancient homelands to war over 450 years ago, some viera began to question their way of life and went off to live among the humes. This went against their law, referred to as the "Green Word", which forbids contact with the outside world. According to Jote, Fran's sister and the leader of the viera who remain in Eruyt Village, once a viera breaks this law, they are considered viera no more and are regarded as outcasts. The viera of Eruyt Village are shown to be able to communicate with the Golmore Jungle, referred to as the "Wood"; an outcast's senses eventually become dimmed, and they become unable to do this, like Fran. Whether a viera can regain the ability to communicate with the Wood is unknown.
- Fran - sky pirate Balthier's companion.
- Jote - Fran's older sister, leader of Eruyt Village.
- Mjrn - Fran's younger sister.
- Krjn - member of Clan Centurio.
- Ktjn - Krjn's sister.
The game introduces the (Feol Viera, フォル・ヴィエラ?, lit. Foru Viera), a sub-branch of the viera. They have blonde hair and shorter ears. Feol viera are the descendants of the aegyl chief Feolthanos who fell in love with a full-blooded viera, giving birth to the race that carries his name. Fran states this variety of viera are often called "the Exiled" as they are seen as abominations by their full-blood kin. The feol viera have the longest lifespan among the viera. Fran also states their particular kind didn't obey the rules of the Green Word, which was to stay within the forest villages they were born in, so Feolthanos's wife was looked down upon as well as her descendants.
Feolthanos didn't want to part with them completely, but as they have no wings, the Feol viera couldn't join him in Lemurés. Feolthanos left the airship Galbana containing a piece of his anima, and a book to his family, in the hopes that one day they would use them to come to him on Lemurés. The remaining Feol viera are apparently wiped out at the Roda Volcano by the Judge of Wings.
The Feol viera Mydia used the Galbana to journey to Feolthanos, but was corrupted by his evil power. When she returns to Ivalice, she slaughters her own race, mainly to prevent them from being used by Feolthanos like she had been.
The viera's light frame make them best suited to jobs that involve speed, like Archer and Assassin, even though they are skillful in many other jobs as well. Their ability to communicate with the spirit world also means they're the only race that can use the Summoner and the Elementalist jobs.
The viera mostly reside in the town of Muscadet deep in the woods, although they are also seen working in clans everywhere. As in Final Fantasy XII, they have naturally white hair, which is considered the most beautiful colour by the viera and is therefore a blessing. Enemy viera sprites also sport green and purple-tinted hair, although this may simply be a result of game mechanics created to help differentiate ally sprites from opponents more easily.
- “Often called the People of the Wood, the viera are a lithe and swift race. Like humes, they can fill a great variety of roles on the battlefield.”
Vieras can be obtained in these locations during Ashleaf or Mistleaf:
- Camoa - Fencer, Archer, White Mage, Green Mage, Red Mage
- Rupie Mountains - Elementalist, Spellblade, Summoner, Assassin, Sniper
Penelo, even though she's a hume, has access to all Viera jobs and is considered as one.