Atlas can cut off her anxiety and calmly view any situation. She also has a tendency of shadowboxing. Despite her beauty, Atlas always tried to get Naofumi's attraction and do everything to attract him. Like always visit Naofumi's room to sleep with him or wear sexy underwear. Naofumi also mentioned her as one of the pervert villagers besides Sadina. Atlas also like to tease her brother, Fouru, every time he tried to go against her act toward Naofumi.
Before Naofumi healed her, her entire body was covered in bandages so that you couldn't see her real face. Her skin was also covered with festering sores, so much so that it’s was a wonder she was even alive. Although her ears and tail were probably of the same race as her elder brother, Foulu, it was difficult to say for sure.
Atlas has a child’s body and appears to be around 10 years old, so there was a disparity. it could be said that she was as delicate as a doll. Despite being a slave, her hair was glossy and her skin was smooth and pale. Her eyes are out of focus and her pupils are dilated.
After the skin disease had recovered completely. Naofumi was lost for words that Atlas is a beauty of a different class from Raphtalia and Firo.
Even though her level’s grown pass 100, she hasn’t grown at all. Perhaps, due to her past illness.
Atlas suffers from a hereditary illness. She cannot see, cannot walk, and she has a short life expectancy.
Atlas hasn't been able to walk since she was small. If she was ever able to walk, then she wouldn't be to be the one who just got protected all the time.
As of Chapter 168, she became able to walk on her own.
Atlas is great with dodging and rolling. She has a strange sense for it. She plays with Firo a lot, and she trained with Naofumi, so she knows how to defend as well. Her fighting style is fundamentally defensive. It’s a style where she waits for an opening in the opponent’s stance before attacking. Her battle senses are of genius levels. She has learned to sense presence even without any teaching. She is able to disrupt the flow of the power within an opponent. Atlas is a genius. By experiencing something once, she can adapt 10 or 20 times faster than a normal person. Her movements have become unbelievably sharp. She even studied Noafumi’s style of defense, and even helps him study the application of Chi. It’s hard to read her movements, and she’s fast. What’s more, whenever someone think they’re going to hit, she immediately diverts the attacks. And on top of that, her attacks naturally ignore defense, so it’s hard to develop countermeasures. Even a fully strengthened Hero would have to go all out against her. Atlas always takes on a large number of opponents, so she gets a lot of battle experience unrelated to her level. During the day, she trains with other strong geniuses like Firo and Sadina, constantly improving herself. Atlas’s small build and dexterity make it hard to land blows on her. Atlas has high growth. Whenever Atlas feels at a disadvantage, she retreats and adjusts her position. Atlas thrusts through them. Instead of hitting them straight on, she goes for the vital points and uses chi. Atlas can gather chi, slightly healing her wounds, recovers her stamina in battle. That’s why if you don’t beat her quickly, you become at a disadvantage the longer the battle runs.
Hengen Musou Skills
Granny said that Atlas’s defensive techniques were lacking, so Naofumi worked together with the Atlas to develop new techniques from the ground up. Naofumi made him so that Atlas was able to use these skills. They’re skills based on his natural ability of defense, so Atlas could mimic them.
『Collect』: This is for magic-based attacks. Using Chi, she can move and redirect a magic attack aimed at her. It’s convenient when facing large scale magic head on. Its radius of effect is three meters. Of course, if she infuses more chi into it, she can increase that.
『Wall』: This technique manifests an invisible wall for a few seconds to obstruct enemies. It mostly works like Naofumi’s Air Strike Shield. It can stop physical and magical attacks to some extent. It’s much more all-purpose than the Air Strike Shield. Its deployable area is also really large. Its weak points are its low defense, and its short effective time.
Atlas is able to place 『Walls』 on her hands. Making it so her opponent bangs his fists against an extremely sturdy wall, attacking her opponents hands. It was meant to be a defensive skill, but against an unarmed opponent like Fohl, it can be used like that as well.
『Ball』: A counter skill. Using it, she can gather and condense a magic attack and send it right back at the caster. Of course, there are plenty of magics it cannot send back, so it isn't that effective. It works on a different principle than hitting attacks back with Naofumi’s shield.
『Point Ball』: A variant of 『Ball』, she doesn’t just return what was given to her. In the counter ball, she put in much more of her own power. It’s mainly geared towards anti-personnel battles but it can equally be used against large monsters like the Spirit Turtle.
Atlas learned how to hold up Mussou Kassei for long periods of time. The Musou Kassei that Firo and Atlas picked up is somehow different from the one Rishia used, because they only learned through observation. Even so, Rishia says their skill is not inferior. And no matter how long Atlas can keep Mussou Kassei up, there’s still a limit. Using only internal Chi, it’s one minute. While taking Chi in, five minutes.
After she died, Atlas became a spirit who live in Naofumi's shield which made she to able to communicate with other spirits such as Spirit of Shield and with other Legendary Weapon's spirits to persuade them to help in fight with Medea.
The Rising of the Shield Hero
Slave Supremacy Arc c131-203
Atlas and her brother Fouru were slaves owned by Zeltbull's Slave Merchant. When Naofumi was there he purchased them and in order to make Fouru more obedient and obtain a high class slave for cheap he used the Medicine of Miracles in an attempt to cure Atlas of her hereditary illness. She refers to Naofumi as the owner of the gentle voice because she cannot see to which Fouru becomes somewhat jealous. c158.
New 7 Deadly Sins c204-357
After New 7 Deadly Sins awakened on Naofumi's body, she later sided with "other" Naofumi and join his flying castle's army and fight for him until the last day.
Before the battle of Houou, Naofumi placed her on back as his promise with Fouru. Then she got a duel with her brother as an approval that she strong enough with both of them. At the end, she fought along with Naofumi at front.
When Heroes arrived in Houou's Island, she also tried to move The Gauntlet and failed. But she said that her brother is more suited to become the next Hero of Gauntlet.
She died while fighting Houou due protect Naofumi and others from the blow up of First Houou as an attack from Tact. c305
Later, as her last wish Naofumi absorbed her body to his Shield which gave him an access to Shield of Compassion. Since that she became an spirit which live on Naofumi's Shield.
Towards the Legend Arc c357-378
Atlas appeared a spirit which come out from Naofumi's Shield after him got back to his world after Medea's first invansion. She later helped Naofumi to communicate with other spirit, also convey him about his last chance to get back to Heroes World as Spirit of Shield's offer. Which after that she continue to live as a spirit with Naofumi and Raphtalia.
The Christmas of Shield Hero c379-385
At Christmas night, Naofumi (who act as Santa) gave her a pair gloves which made by an material that can be touched by spirit (which Naofumi's hope that her brother will be happy to be able to touch her again). He also gave her a doll of him with the same material with gloves as a Chrismas present which granted her wish to hug Naofumi all night.
Iwatani Naofumi: Naofumi is Atlas’s absolute doctrine. She treats Naofumi’s orders as absolute and agrees with whatever he says. And whenever his life is concerned, she will stay by him until the end. She was drawn to his deep-rooted kind nature. His true nature is one where he is always devoting what he has to others.