Ninja Kaijin

Ninja Phantom (忍者怪人, Ninja kaijin) is a created by  that first appeared in episode 48 of Go! Greenman.

Appearance
Ninja Phantom looks exactly like one of Maoh's Phantoms, except he wears ninja outerwear such as a gappa and zukin.

Go! Greenman
Ninja Phantom was the forty-ninth monster to battle Greenman.