Tio Plato
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Tio Plato CS3

Tio plato ao

Tio plato zero-evo

Kanji ティオ・プラトー
Rōmaji Tio Puratou
True Name
Age 14 (Ao/Zero/Akatsuki)
15 (CS2)
16 (CS3)
Date of Birth
Race Human
Gender Female
Eye Color Light Green
Hair Color Aqua
Weapon Orbal Staff
Relatives Unknown Parents
Orbment Water
Affiliation Crossbell State Police Department
Special Support Section
Epstein Foundation
Occupation Police Inspector
Engineering Chief
Piloted Units
Main Game
Zero no Kiseki + EVO
Ao no Kiseki+ EVO
Trails of Cold Steel III
Other Media
Voice Actor(s)

I do have interest in the Reeves II Campus and Class VII, and especially "whom" Lloyd fought.
—Tio's intro quote, Trails of Cold Steel III

To be accurate, I'm not a police officer, but a tester sent by Epstein Foundation
—Tio's intro quote, Zero no Kiseki

Tio Plato is a main character and a heroine of The Legend of Heroes: Zero/Ao duology. Tio is one of Epstein Foundation's orbal staff testers, similar to other orbal staff testers in the series, she writes a general report of her usage with it. She is good friends with Juna Crawford, having encountered her a few times in the past, especially in Liberl.



Tio wears her hair in twintails while leaving some of it down. She has light blue hair and wears a mauve colored dress underneath a matching cape. She wears a headband resembling cat ears, that glow when using her enhanced 'senses'.

As of Trails of Cold Steel III, she wears a white coat over her dress instead of her cape, the same as her old friend Randy Orlando.


Tio is a small and reserved girl. She is very polite at first meeting, but warms up overtime and gives a bit of subtle sass and jokes.

Tio loves all things cute, especially Mishy, but does not like to admit it.

Character Profile

Little is known about her past, but she worked as part of the Foundation's research team since early childhood due to her being a genius. After reaching 14, she was transferred to Crossbell State in exchange to establish the Police's newest division, the Special Support Section. In truth, she enrolled as Epstein Foundation's tester for the new Orbal Staffs while researching on the "Eion System", a link system which is said to enable the “resonance connection of info-processing” between humans and machines.

Overtime with her new friends, Lloyd, Elie and Randy, Tio solved a variety of cases while confronting her traumatizing past against the D∴G Cult. After the incident, she began to open up more than being the team's techno-operator, but more closely to Lloyd, the younger brother of her savior.

After Crossbell was annexed, Tio was temporarily called back to Foundation HQ, but decided to return to Crossbell for her friends's sake. Although under surveillance by the Imperial Intelligence Division, she still keeps ahead of all research as engineering chief while simultaneously working behind the scenes as a “liaison.”


Tio was captured by the D∴G Cult when she was a child. The lodge she resided in was located in the Calvard Republic, where children like her were experimented on in order to collect data for the cult's drug, Gnosis. Over time Tio began to lose her feelings, as a side effect of the experimentation she had been submitted to. She could not feel anything but pain and fear. Due to the tests for data collection, Tio's senses were enhanced, which allowed her to especially hear anything more than the average human. Tio was the only successful subject in her lodge, for all the other children could not take the the suffering and high doses of drugs. She could only hear screams and see blood as the rest of the children died at the expense of the demonic experiment.

Guy Bannings, Arios Maclaine, and Sergei Lou successfully infiltrated Tio's lodge and put an end to the D∴G Cult's schemes. After their plans being crushed, the cult all committed suicide to leave no traces of what was to come next.

Tio recalls Guy stepping over all the bodies littered on the floor just to reach the only surviving life, herself, Tio Plato.


  • According to Estelle during their first meeting, she giggled about her and Lloyd's names being the same as her friends came home in Liberl.[1]
  • As of Ao no Kiseki, Tio became the 3rd party character to utilize a mecha as her S-Craft.
  • Randy's nickname for Tio is "PeTiote," which references to her tiny structure.
  • Renne, like Tio, was also a victim of the D∴G Cult's experiments.


  1. Zero-Ch01: A Wolf Day Afternoon cutscene
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