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Caru Aeter
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Kana: カル=アイテル
Rōmaji: Karu Aiteru
Alias: Chaos Aggressor
Azure Eternal
Child of Azure
Kana: カオス=アグレッサー
Rōmaji: Kaosu Aguressa
Azuru Itaanaru
Gender: Male
Race: ???
Age: 18
Date of Birth: ???
Height: 6'1" ft
Weight: 120 lb
Blood type: ???
Weapon: Unholy Sin: Cultellus Acies
Crest of Azure
Rank: A
Personal Status
Relatives: Tutela Aeter (sister)
Education: Stella Crinita Academy
Status: Active
Affiliation Status
Affiliation: Independent
Simple Move List
Drive: Quick Draw
Overdrive: Endless Dance
Distortion Drives: Life Ring
Life Comet
Astral Heat: God Hand
Game(s): BlazBlue Chaos Aggressor
Anime(s): Chaos Aggressor
English Voice: Johnny Yong Bosch
Caru Aeter is the Child of Azure, created to destroy the world. He is the titular protagonist of BlazBlue Chaos Aggressor.


Caru was a product of the Azure created with Kisaragi's Comet by Arces and the Collector in order to perform Exponential Entropy upon the world. Dubbed the Child of Azure and the Chaos Aggressor, he's supposed to act as the fuel for the Sors Controller.

After the comet made landfall upon the Earth, the newly-created Caru was found by a young and orphaned Tutela Aeter and given the name Caru Aeter. Caru spent years growing up believing that he was human and that Tutela was his sister.

As the Caldus Age began and the reign of the Caldus Spaera Armatura grew, Caru lived in relative comfort alongside his sister in a somewhat large village with little to no seithr radiation. He grew up alongside friend Hikaru Koibito, whom he cherished. By 0018 CA, the village has grown to become a large town thanks to Armatura. He attends Stella Crinita Academy with Hikaru, though has grown bored of the student lifestyle.

Chaos AggressorEdit

The Death Conflict has started, between Armatura and a faction called Zenith which was formed by the remnants of those who survived the Hanged Man Conflict. One day, the town is attacked suddenly, with most of the residents escaping to the walls of Stella Crinita as a shelter. Caru is able to get both his sister and Hikaru to safety, though not before noticing Armatura soldiers doing something strange in the middle of the chaos.



Caru has spiked red hair and crimson eyes. He has a thin build. Throughout the entirety of Chaos Aggressor, Caru wears the standard uniform of his academy, which consists of a dark teal dress jacket with lapels and white cuffs. Underneath is a plain white dress shirt with crimson necktie. He wears a pair of khakis and crimson shoes.

Below his collarbones and on the back of his right hand are a black crest—the physical manifestations of his Crest of Azure grimoire. They appear after his encounter with an Azure Fragment, Cultellus Acies.

Powers and AbilitiesEdit

Musical ThemesEdit


  • Caru's name derives from the Latin words Caeruleus and Aeternus. Together, those words mean Azure Eternal.