Niwa

Niwa appeared in 2007 TV series called Juken Sentai Gekiranger. Niwa is a Beast-Man of Rinjuken Akugata.

A Confrontation Beast Crocodile-Fist (臨獣クロコダイル拳 Rinjū Kurokodairuken) user, his fighting style emulates the reckless brute force of a crocodile. One of Rio's top five Rinrinshi, Niwa is confident of being able to defeat the Gekirangers single handedly without Maku's power. Niwa overpowered GekiBlue, GekiYellow, and GekiViolet until Jan arrived, with Ken Hisatsu's interference halting the fight for now. In the second round, he fought the three Gekirangers again until Super GekiRed arrived with Ken transforming into GekiChopper for the first time, whose blade attacks penetrated Niwa's armored body and destroyed him.

Powers and Abilities
Crocodile Ringi
 * Ten Thousand Stones Descend (万降石 Bankōseki)
 * Mudbank Torso Snapping (泥州胴折り Desudō Ori)
 * Mudbank Torso Snapping: Authority (泥州胴折り・通 Desudō Ori Tsū)