Basher

 Basher is a virus from Mega Man Battle Network 3. It is a stationary virus that uses a scanner to scan along each column on the target's field. If it locks on a target, it jumps up and fires a tri-cannon that cracks the panels that get hit.

Basher
 Basher is a white tri-cannon variant.

Smasher
 Smasher is a yellow tri-cannon variant.

Trasher
 Trasher is a black tri-cannon variant.

BasherΩ
 BasherΩ is a red tri-cannon variant.