Corvus

" I...AM...NOT...A MISTAKE!"

--Corvus

Corvus is the main antagonist and revealed to be the mastermind behind the events of both Twintail Rebellion and Twintail Rebellion S.

Corvus is a conscious artificial intelligence created by a virus in Tail Gear software. During the First War arc, it infected both Red Solaris and Silver Aquila and managed to slowly corrupt both of them, causing them to fight a civil war against each other based on delusive ideas and thoughts that it implanted in both Solaris and Aquila's minds through the Direct Neural Interface (DNI) cybernetic system in their Tail Gear.

When Solaris was defeated at the end of the civil war and her spirit sealed within her Tail Gear, she ended up waking in a virtual afterlife created by Corvus from the consciousness of DNI users. It sought to connect with Solaris' consciousness in order to keep both her and itself alive. After all, Solaris' desire for vengeance and Corvus' desire for survival allow the two to briefly join each other. All the while, Republic scientists and Twintail officers managed to uncover Corvus' existence and its infection. Therefore, in an effort to terminate the virus, every Tail Gear was duly reprogrammed and every DNI purged of potential viruses. Due to this, Corvus itself and the virtual afterlife it created began to gradually wither. In an attempt to survive, Corvus began to desperately seek out new hosts for Solaris' Tail Gear. However, Tail Gear engineers were able to trace the origin of the virus to Solaris' Tail Gear. The Tail Gear is then ordered to be destroyed at once. However, via Twoearle's memories of Solaris and Silver Aquila, who was also infected, Corvus manages to briefly manipulate Twoearle to instead safeguard Solaris' Tail Gear until a new host could be found.

By the time Soji Mitsuka first took up the Tail Gear to become Tailred, Corvus was at a weakened state and didn't complete its synchronization with Tailred until the time of the Second Ultimeguil War. Until then, Soji was completely unaware of Corvus' existence. However, at the height of the war, complications arose and a sudden glitch in Tailred's DNI causes a physical split between Soji and Tailred. With Soji out of the way, Corvus easily infects the separate Tailred and quickly seizes control over her mind. Also, in the process, it also began to implant Solaris' memories onto Tailred's mind, and allow Solaris' exiled spirit to possess the body. With Corvus in control of the mind and Solaris of the body, Tailred is manipulated into executing the Twintail Purge.

It was later revealed that years prior, Corvus somehow copied itself onto microchips implanted on every clone trooper at birth. Though clones are non-DNI users, they are genetically-engineered to be dependent of one another, and their microchips allows their minds to be connected without the need of DNI. This connection made it easier for Corvus to quickly seize control of them all at once when their chips' sleepers activated. Now deeply embedded within the minds of multiple hosts, Corvus has became so dormant. As it expanded its control, so did the simulated afterlife it sought to preserve. That explains why several notable clones, such as Fives, were later driven mad with obsession of finding this world Corvus has created.