Navi Shadow

Navi Shadow and Navi Black are enemies encountered in MegaMan Battle Network 4. They are NetNavis that have become tainted by darkness. Both enemies are immune to all attacks (even the Gun del Sol) except for sword-type attacks and Battle Chips.

Navi Shadow
Navi Shadow (abbreviated NavShado in game) are stronger, faster version of the NormalNavis with 200 HP and an attack power of 100. They attack with a sword and a cannon. They are encountered in both areas of Black Earth.

Navi Black
Navi Black (abbreviated NavBlack in game) are stronger, faster version of the HeelNavis with 250 HP and an attack power of 100. They attack with a three panel long sword and a cannonball. They are encountered in Black Earth 2.

In the anime
Three Navi Blacks makes an appearance in episode 23 of Rockman EXE Stream where they fight MegaMan, GutsMan, and Meddy.