Filo

Filo (ambiguously translated as Firo) is a Philorial purchased alongside Raphtalia during the outset of the story. She develops into a Queen due to her association with the Hero of the shield, and is a staunch ally to the hero, as the possessor of unique class-up effects. She also becomes particularly close to Second Princess Melty.

The name has no official romanization, so its translation is somewhat ambiguous. It is implied in the web novels that Naofumi was simply using an abbreviation of her species' name, making several spellings possible since the translations vary from "Filolial" to "Philo-Rial" depending on how the Japanese handling of western consonants is interpreted.

Personality
Filo's personality has varied greatly throughout the story. Filo 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 Filo 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) Filo began to behave much more appropriately and since that point Naofumi has has very little trouble with Filo, he could even begin to rely on her when a task needed to be completed. Filo 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).

Filo 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.

Filo is way too talkative. Filo 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
Filo's Appearance has changed many times, depending on her form.

Beast/Monster Form- When Filo 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. Filo'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. Filo 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 Filo's feather had started to turn into a much lighter shade of pink then prior forms, and were beginning to turn white. Filo'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
Filo was oringally born from a monster egg which naofumi purchased from the slave trader, which the trader used as a buisness front. Originally Filo had the appearance of a small pink Filolial chick ( much like an actual chick) and would sit on top of naofumi's head when they were on the road,however, Filo grew very rapidly and within a few days was the size of a normal Filolial, this was thanks to naofumi's monster tamer shield, which he unlocked from some egg shell's his shield had absorbed. Filo also has exceptionally fast legs, so much so in fact that she was able to beat a dragon in a foot race. Filo's growth however was not done at that point as a day later she had grown to exceed the size of a normal Filolial and upon interrogating the slave trader, he found that that she "Filolial Queen". Naofumi, wanting to know more about a Filolial Queen, offered to have the slave trader take care of Filo 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 Filo was in, and much to everyone's surprise, Filo transformed herself into a small human girl with blonde hair and reached out for naofumi as he turned to leave.

Abilities
{{Scroll Box Filo 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, Filo is peerless. Her attacks are extremely quick and heavy. She can also accelerate herself to greater levels with Magic, making her a troublesome opponent. Filo 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. Filo’s singing ability has reached magical levels. Filo’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
Filo has experience singing in bars. Becoming quite famous by word of mouth. Filo’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, Filo 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 Filo tried to copy Naofumi and Atlas, she was immediately able to grasp Musou Kassei. Even though Filo 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 Filo subconsciously activated Musou Kassei. Her movements are quicker than before. The Musou Kassei that Filo 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 Filo 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

 * Filo’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 Filolial) was arbitrarily decided by the fans.
 * It seems some people have completely abandoned their discriminatory mindsets to pursue Filo. She seems to have a lot of fans. One time when Filo 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 Filo. Painters have sent in requests to use her as a model.