The Purple Ninja, or Niji, are an alternate version of the Blue Ninja, or Deezi. Like the Deezi, Niji will walk along a floor until they hit an object and then turn around; however, Niji will jump off ledges, moving further down the tower as they move. This causes them to often gather together in small blocked off areas.
They have only one Hit Point and can be Beheaded.
They deal damage if contacted.
They begin to appear around the second quarter of The Roof. Later, they appear sporadically among other enemies.
They are the best rage building Enemies because they tend to clump together if you allow them to continue descending the tower.