He is one of the few characters, debuting in Rise 2: Resurrection as a secret character. To fight Anil 8, you have to face him through after all of the characters (and after facing Sane), before you face the Supervisor (or before facing the Mayhem).
Rise 2: Resurrection"This latest generation Supervisor-augmented cybernetic organism known as Anil-8 is an ant-like robot the beneficiary of synthi-clone of Necroborg, and kevlar-manganese armour. It has been designed to copy the Necroborg's database any further cybernetics that Electrocorp may send in to reclaim the building. The Anarchy Virus has made Anil-8 who is the Supervisor's guardian with the empowered that it is a human with a mission to terminate all robotic life forms. Anil-8 is capable of discharging lightning meteors, plasma disrupters, strong arm and molecular distortion blows."