Filo

Firo's Name is one that make cause confusion to some fans. Originally in the web novel, Naofumi did not want to name Firo, due to becoming attached he opted to name her Firo, to which Raphtalia responded with saying that was a cheap name. The reason for this is because of the translations of Philorial, was Firorial and thus her name was sort of a generic, shortened version of the word.

Personality
Firo's personality has varied greatly throughout the story. Firo originally acted like any normal animal, prior to her transformation ability. She ate a lot, showed a great amount of affection toward Naofumi, and even convinced Naofumi to sleep in a stable with her because she was lonely, by pulling on his mantle. After Firo gained the ability to transform her personality became that of a spoiler child, she would refuse orders until she was fed, would throw fits when Naofumi wouldn't sleep in the same bed as her, and would randomly transform when she saw fit. Once Naofumi threatened to sell her (and with a little help from an advanced slave mark) Firo began to behave much more appropriately and since that point Naofumi has has very little trouble with Firo, he could even begin to rely on her when a task needed to be completed. Firo since has worked hard to gain naofumi's approval so that she won't be pushed aside if something should happen to her ( thought it is unlikely Naofumi would really ever do that).

Firo has also shown to be very caring, she loves Naofumi very much and considers him " her property" and often reminds Raphtalia that she "won't lose to her." She also has shown a lot of affection toward Melty, the second princess and even so went so far as being unable to defeat an enemy because she thought the enemy looked like Melty.

Firo is way too talkative. Firo can figure out and say exactly the things people are trying to hide. She’s been reserved as of late, but from the start, she’s been overly intrusive.

Appearance
Firo's Appearance has changed many times, depending on her form.

Beast/Monster Form- When Firo was born she was a small pink chick, she looked to be about the size of an average chick. After a day, and some leveling, she had grown to the size of a steamed bun. Firo's third appearance change would be that of a small baby ostrich, not large enough to ride on, but definitely larger then the prior 2 forms. Firo would then grow into her second to last beast transformation, which was the size of a normal ostrich, and she was now capable of being ridden it should also be noted that Firo's feather had started to turn into a much lighter shade of pink then prior forms, and were beginning to turn white. Firo's last and most current form is larger then an ostrich and resembles an Owl, her feathers are also almost completely white aside from a small ruffle on her abdomen and some feathers on her wings which still contain pink.

Background
Firo was oringally born from a monster egg which naofumi purchased from the slave trader, which the trader used as a buisness front. Originally Firo had the appearance of a small pink Philorial chick ( much like an actual chick) and would sit on top of naofumi's head when they were on the road,however, Firo grew very rapidly and within a few days was the size of a normal philorial, this was thanks to naofumi's monster tamer shield, which he unlocked from some egg shell's his shield had absorbed. Firo also has exceptionally fast legs, so much so in fact that she was able to beat a dragon in a foot race. Firo's growth however was not done at that point as a day later she had grown to exceed the size of a normal philorial and upon interrogating the slave trader, he found that that she "Philorial Queen". Naofumi, wanting to know more about a Philorial Queen, offered to have the slave trader take care of Firo for a few days, but, shortly after leaving her, he was called back due to a ruckus she had caused. After Naofumi and the slave trader get into an argument, a strange voice was heard from the cage Firo was in, and much to everyone's surprise, Firo transformed herself into a small human girl with blonde hair and reached out for naofumi as he turned to leave.

Abilities
{{Scroll Box Firo has high basic attack and speed. She can also use ranged magic. Her specialty is crowd clearing. She can’t use pressure points or Hengen Musou, but she can use her natural overflowing power to subjugate her enemies. Looking at just speed, Firo is peerless. Her attacks are extremely quick and heavy. She can also accelerate herself to greater levels with Magic, making her a troublesome opponent. Firo is also big, when trying to dodge, her size is a disadvantage. Her battle experience and actual level are high, and she has gotten an understanding of both magic and Chi. Firo’s singing ability has reached magical levels. Firo’s new-found flight, has many weaknesses. By flying, she sacrifices a few of her abilities, because she uses magic to fly. So flying greatly diminishes her magic supply. What’s more, she can’t put as much power into her feet as when on land, so her kicking power decreases. The power in her beak and claws also decreases. Also, because she has to concentrate on flight, using magic like Quick and Spiral Strike is difficult.
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Singing Abilities
Firo has experience singing in bars. Becoming quite famous by word of mouth. Firo’s definitely good at singing. If there’s music playing, she can make words and tunes to complement the song perfectly, and she’s got a nice sense of rhythm. She also likes dancing, and in human form, she’s a bishojo.

Magic

 * 「Tzuvait Tornado」 c66
 * 「Sweet Song」 c234
 * 「Sanctuary」 c312

Skills

 * 「High Quick」 c91
 * 「Spiral Strike」c118
 * 「Wing Tornado」 c302: Flapping her wings strongly, Firo rotates her body as she rushes at her opponent. It looks like her Spiral Strike, but it isn’t nearly as fast.

Hengen Musou Skills
Musou Kassei A technique for sucking in Chi from the air. When Firo tried to copy Naofumi and Atlas, and was immediately able to grasp Musou Kassei by copying Firo and Naofumi. Even though Firo had experience using the pose to recover magic, in just a day of practice, she learned to suck in Chi and move around, conveniently obtaining power easily. What’s more, it seems that Firo subconsciously activated Musou Kassei. Her movements are quicker than before. 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 Firo can keep Mussou Kassei up, there’s still a limit. Using only internal Chi, it’s one minute. While taking Chi in, five.

Seven Star Claw Skills
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 * Instant Claw

Chronology
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The Rising of the Shield Hero
Devil of Shield Arc c1-78

Cal Mira Island Arc c78-114

Spirit Turtle Arc c115-130

Slave Supremacy Arc c131-203

New 7 Deadly Sins c204-357

Towards the Legend Arc c357-378

Side Stories
The Christmas of Shield Hero c379-385

The Valentine of Shield Hero c386-402

The White Day of Shield Hero c403-409

The Reset of The Spear Hero Gaiden
Loop 1 to 3 - Tutorial Arc c410-414

Loop 4 - Silt Welt Arc c415-455

Loop 5 - Melromarc Arc c456-574

Loop 6 - Foburei Arc c575-current }}

Trivia

 * Firo’s idol backstory (she has to act as an idol and earn money in order to break her curse that causes her to transform into a philorial) was arbitrarily decided by the fans.
 * It seems some people have completely abandoned their discriminatory mindsets to pursue Firo. She seems to have a lot of fans. One time when Firo sang in the village bar, the bar was so packed that no one could fit through the door anymore. Some people even settle in that village for Firo. Painters have sent in requests to use her as a model.