Zero Virus (anime)

Zero.EXE is a character in Rockman.EXE Beast+ working for the Professor. A being of few words, Zero is a mysterious and powerful enemy, and is even able to easily best a cross fused Enzan Ijuuin in combat, something very few have done. Though physically appearing to be a NetNavi, Zero is actually a virus, and carries the Zero Virus which he can use to infect other viruses and beastize them. Despite this, Zero actually has free will of his own, and refuses to be used as a tool by the Professor while wishing he were an actual Navi.

History
He appears in episode 1.

He appears in episode 2.

He appears in episode 3.

He appears in episode 5.