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Main characters
Yuinshiel Asteria
Yuinshiel Asteria
Voiced by: Kaede Hondo (Japanese), Amber Lee Connors (English)
The main protagonist, and the Empress of Enastoria. She is called Yui by her friends.
- Beware the Nice Ones: Yui is a Nice Girl, but she is willing to kill to protect her family and/or her country.
- Big Good: Being the Empress of the Enastoria Empire.
- Chick Magnet: Aside from her relationship with Rena, Aoi and Retsu have shown interest in her as well.
- Hair of Gold, Heart of Gold
- High-Class Gloves: In her empress outfit.
- Innocent Blue Eyes
- Modest Royalty: Yui lives like a normal person.
- Nice Girl
- Royal Blood: She's the empress of her country.
- Royals Who Actually Do Something: Yui strives to be this, and is both the empress and the pilot of a giant robot.
- Sheltered Aristocrat: Yui shows some signs of this, despite trying her best to avert it. For example, she didn't realize that telling a shady reporter her three sizes (on live television!) may not have been the best idea.
- Sympathy for the Devil: Yui thinks Johann is trying to steal everyone's souls because he knows no other way to make "friends" and escape from loneliness. Not that it stops her from giving him a much-deserved beatdown.
- Universally Beloved Leader: The people of Enastoria adore Yui, as seen in Episode 3.
Magna Alecto/Rena Asteria
Magna Alecto/Rena Asteria
Voiced by: Ayane Sakura (Japanese), Bryn Apprill (English)
Yui's adopted sister and Regalia.- Bare-Fisted Monk: Magna Alecto conspicuously fights with punches and kicks, while everyone else has some sort of weapon.
- Big Little Sister: Rena is older than her sister Yui, but looks a decade younger than her little sister.
- Calling Your Attacks: Rena is fond of doing this as Magna Alecto, despite none of her opponents doing so.
- Caped Mecha: More of a poncho, really. In any case, Magna Alecto has it in some forms.
- Casting a Shadow: Magna Alecto seems to be associated with darkness.
- Dark Is Not Evil: Magna Alecto certainly looks sinister, with Rena's transformation showing it emerging from a chained mass of darkness and its red and black color scheme. Rena is nothing but kind and loving, though, if a bit stoic.
- First-Episode Twist: Rena is an immortal being capable of summoning/becoming a Humongous Mecha and Yui is the empress.
- Humongous Mecha: Both Rena and Tia are Regalia, young-looking girls who transform into robots, and Regalia Gear, non-sentient robots who have human pilots fused with them.
- Invocation: Rena does this a lot. It's not clear if it's actually necessary, given that she was able to transform fine without it the second time.
- Not Blood Siblings: Yui and Rena aren't related.
- Older Than They Look: Regalia and their pilots don't seem to age. Rena is bit older than Yui, but looks a decade younger.
- Red Eyes, Take Warning: Magna Alecto's eyes turning red means it's gone berserk, which is bad for everyone involved.
- Scarf of Asskicking: On Magna Alecto. Unlike the cape, it sticks around.
- Tears of Blood: The eyes on the... chain-thingy that appears when Magna Alecto goes berserk do this. It's all kind of trippy and more than a bit creepy.
Sara Kleis
Sara Kleis
Voiced by: Yurika Kubo (Japanese), Brittany Lauda (English)
Tia's sister and Regalia.- Big Damn Heroes: Attempted by Tia and Sara in episode 4. It doesn't work out so well.
- Big Eater: Sara and Tia are shown eating several bowls at Retsu's restaurant. They also apparently tried running out on that same order, leading to them having to do some "forced labor" for her during the festival.
- Genki Girl
Aurea Tisis/Tia Kleis
Aurea Tisis/Tia Kleis
Voiced by: Yui Ogura (Japanese), Jill Harris (English)
Sara's sister.- An Ice Person: Her Regalia form.
- Badass Longcoat: Tisis' design evokes the look.
- Big Damn Heroes: Attempted by Tia and Sara in episode 4. It doesn't work out so well.
- Big Eater: Sara and Tia are shown eating several bowls at Retsu's restaurant. They also apparently tried running out on that same order, leading to them having to do some "forced labor" for her during the festival.
- Genki Girl
- Humongous Mecha: Both Rena and Tia are Regalia, young-looking girls who transform into robots, and Regalia Gear, non-sentient robots who have human pilots fused with them.
Ingrid Tiesto
Ingrid Tiesto
Voiced by: Asami Seto (Japanese), Kristy Sims (English)
The princess of Rimgarde. Her country was destroyed by the Lux ex Machina and she had been seeking to bring the one responsible for her country's destruction to justice.- Anti-Villain
- Braids of Action
- Even Evil Has Standards: Ingrid and Abel are creeped out by Johann's sadistic behavior, even if they're working with him to capture Rena.
- Fallen Princess: Her country was destroyed by the Lux ex Machina.
- Mystical White Hair
- Royal Blood: She's the princess of her country.
Xeno Megaera/Kei Tiesto
Xeno Megaera/Kei Tiesto
Voiced by: Nao Tōyama (Japanese), Jad Saxton (English)
Ingrid's adopted sister and Regalia. She was found all alone and abandoned by Ingrid and since then she became her sister.Enastoria Empire
Aoi Konoe
Naru Arisaka
Naru Arisaka
Voiced by: Yuka Iguchi (Japanese), Rachel Glass (English)
- Curtains Match the Window: Red hair and eyes.
- Girlish Pigtails
Margaret Burnley
Margaret Burnley
Voiced by: Masako Katsuki (Japanese), Linda Leonard (English)
The Prime Minster of the Enastroia Empire. Jonathan Marshall
Jonathan Marshall
Voiced by: Hiroshi Yanaka (Japanese), Mark Stoddard (English)
The Chairman of the Joint Chiefs of Staff, and also a General of the Enastroia Empire. Theodore Moore
Theodore Moore
Voiced by: Hidenari Ugaki (Japanese), Michael Johnson (English)
The Imperial Director of the Enastroia Empire. Maya Asteria
Maya Asteria
Voiced by: Noriko Shitaya (Japanese), Morgan Garrett (English)
Yui's mother.- Strong Family Resemblance: Looks a lot like her daughter.
Republic of Afmaraldo
Karim Al Talaqy
Karim Al Talaqy
Voiced by: Hajime Iijima (Japanese), Randy E. Aguebor (English)
- Ambiguously Brown: His name, dress, and appearance suggest he's Middle Eastern in origin.
Ryu
Others
Retsu Narumi
Johann
Johann
Voiced by: Megumi Ogata (Japanese), Luci Christian (English)
A scientist from Rimgarde and main antagonist of the series.- Actually a Doombot: Johann is seemingly defeated in episode 8, only for him to turn out to have several clones.
- Alas, Poor Villain
- Artificial Human: As he dies, Johann states that he was created by someone
- Big Bad: Everything that has happened in the series can be traced back to Johann, as shown in Episode 8.
- Creepy Child
- Curtains Match the Window: Teal hair and eyes.
- Faux Affably Evil: Johann and Johnny are polite and jovial towards others, but they're so creepy about it that they end up being Obviously Evil as well. In episode 12, Johann eventually drops the act and starts acting like a Royal Brat.
- Green-Eyed Monster: Zigzagged. Yui accuses Johann of being jealous of humanity's ability to form bonds. He denies it, but at the same time, he claims Yui "has everything." As he dies, he finally lets go of his hatred and accepts Yui's sympathy.
- Hope Spot: After Johann is defeated in Episode 8, he turns out to still be alive in the next episode and kidnaps the Regalia and pilots except for Yui.
- Laser-Guided Amnesia: Johann inflicts it on the whole world in Episode 10, causing everyone to forget about Yui and Rena.
- Me's a Crowd: Johann is revealed to have multiple clones of himself.
- No-Holds-Barred Beatdown: After Kei is finally awakened, Yui, Rena, Sara, Tia, Ingrid, and Kei waste no time in beating down Johann.
- Soft-Spoken Sadist: Other than a few chuckles and Slasher Smiles here and there, he barely raises his voice in spite of his cruelty. In his Villainous Breakdown, he talks with soft rage in his final attempt to kill Yui.
- Slasher Smile
- Tranquil Fury: In his Villainous Breakdown.
- Villainous Breakdown: Johann starts losing it against Yui and Rena in Episode 12. Even more so in Episode 13 when Ruks gives them her power.
- Walking Spoiler
Edmond Morales
Edmond Morales
Voiced by: Taketora (Japanese), Paul Giovanni Ramirez (English)
Johnny Muppet
Johnny Muppet
Voiced by: Junji Majima (Japanese), Josh Grelle (English)
- Action Bomb: Johnny's final attack.
- Faux Affably Evil: Johann and Johnny are polite and jovial towards others, but they're so creepy about it that they end up being Obviously Evil as well. In episode 12, Johann eventually drops the act and starts acting like a Royal Brat.
- Four Eyes, Zero Soul
- Magicians Are Wizards: Johnny Muppet has a stage magician theme and appears to be capable of teleportation even outside his Regalia Gear (inside it...).
Abel Lundestad
Abel Lundestad
Voiced by: Atsushi Ono (Japanese), Bruce Carey (English)
- Anti-Villain
- BFS: Abel's Regalia Gear has one.
- Even Evil Has Standards: Ingrid and Abel are creeped out by Johann's sadistic behavior, even if they're working with him to capture Rena.
- Evil Eyebrows
- Stealth Mentor: Doubles with Sink-or-Swim Mentor. Abel challenged Yui and Rena in order to make them "bound" to each other, which would allow them to awaken Kei.
- Teleport Spam: Abel's main tactic, though it's ambiguous if he's actually using Flash Step.
Noa Kleis
Noa Kleis
Voiced by: Kana Asumi (Japanese), Cherami Leigh (English)
- Heroic Willpower: Is initially mind-controlled by Johann to pilot one of his oversized mechas, but she eventually breaks free and uses the mecha to fight against him.
- Humongous Mecha: Johann has even bigger ones on his side, including one that's piloted by Sara and Tia's sister.
Lux