So, basically, an anti-ARIA character. Since she is basically a computer, so a virus-character would be someone created to take down ARIA and the UltaTech system.
How would that character take physical form? Another robot character? Because I don’t think there should be more, since we already has ARIA and Fulgore.
Maybe a person or a cyborg with a VR headset/helmet on whom the virus has somehow taken over.
But either way, the character needs to become a sort of living being, a physical manifestation. It can’t just be a virus-program, because that would only work in cyberspace, and KI doesn’t take place in cyberspace.
A digital virus character - I actually think that’s a stellar idea. The only way Orchid could truly take down UT is by reprogramming a Fulgore and having it and Sadira theif-up some internal software/hardware, and get some reprogamming happening to create a virus. Yet, if it was to manifest into a character, it might be a culmination of random ARIA / Fulgore parts, no?