Ryunosuke Ikenami is Shinken Blue, the Samurai of Water who uses a water arrow as hi main weapon and rides the Ryu Origami mecha. Chiaki Tani is Shinken Green, the Samurai of Wood who uses the wooden spear as his primary weapon and rides the Kuma Origami mecha.
Samurai Sentai Shinkenger Papercraft - Blue & Green Shinken