anti solver drones

They were once DDs partially destroyed by humans at the time of the core collapse of earth, brought aboard a human evac ship, and then rebuilt to withstand the Solver and exterminate it. Each Anti-solver drone has "solverblock.exe," which uses the Solver itself, but a modified enough version combined with The Patch allowing the abillity to counter the Solver. And with The Patch, they are able to inject viruses to neutralize Solver hosts. They are also mostly based on agility to evade NULLs and any non-direct contact attack from the Solver. Of course, not all of them are perfect due to the humans' slight "programming inconveniences". S.D. - "9" is the only flawless one. They are all 20 but 7 acts out her age-more childish