Ninjaman

"Partner of Justice, Ninjaman!"

"You say I am a Blue Squirrrrrt?! I explode with anger! Samuraiman, Arrives!"

Ninjaman (ニンジャマン, Ninjaman, 36-53): The pupil of the Sanshinshou, who was within a blue pot as punishment a millennium ago for allowing himself to be fooled by Daimaou to attack the humans.

Biography
Once released by Tsuruhime, Ninjaman becomes an ally to the Kakurangers and comes to their aid when needed. As a ninja master, Ninjaman wields a katana, and had a wide array of Ninja-Arts at his command, including enlargement to aid his mentors in their fights. He rides on a cloud called the Kintou Cloud. Whenever a Youkai calls him "Blue Squirt" (青二才, Ao Nisai), he gets angry enough to change into Samuraiman (サムライマン, Samuraiman), who connects his weapon with its sheath to form a powerful javelin. In this state, Samuraiman creates explosive energy spheres formed from his rage in his ultimate attack, Samurai Rage Bomber. In the finale, after the Youkai are sealed away, NinjaMan is now with his masters and says goodbye to the Kakurangers.

Ninjaman ultimately did not join the Kakuranger and all other Sentai heroes during the Great Legend War due to being locked away in his jar in a shrine. The Gokaiger did protect the jar during a mission presented by Domon of the Timeranger and he appears to be connected with the Kakuranger, possibly the final Greater Power of the 34 previous legends. Then the Gokaiger return to the shrine to find the jar and is released by Ahim de Famille. He explains about how he saved a little girl, but his very destructive countermeasures resulted in him being sealed away once again by the Sanshinshou. Then the Gokaiger take him to the Gokai Galleon and fill him in on things like the Great Legend War to even their own fight with the Space Empire Zangyack and Basco ta Jolokia. They even tell him about the 34 Super Sentai teams and the Gokai Changes that they have done including Kakuranger.

Arsenal

 * Ninja Sword
 * Kinto Cloud

Samuraiman
"Explosion of Anger! Samuraiman is here!"

Attacks: Samurai Rage Bomber

Arsenal

 * Samurai Javelin

Trivia

 * Before his fate was revealed in episode 40 of Gokaiger, it was believed that Ninjaman died in the Great Legend War as the pamphlet of Gokaiger Goseiger Super Sentai 199 Hero Great Battle mentioned a battle during the war in which most of the Sentai mecha was destroyed.
 * With the promo for episode 45 now out, it appears that Ninjaman was imprisioned long before the Great Legend War, perhaps during the events of Chouriki Sentai Ohranger vs. Kakuranger.

Also see

 * Ninjor his American counterpart from Mighty Morphin Power Rangers, season 3