Toyoppe has just released this huge robot named ShinkenOh from the Samurai Sentai Shinkenger. Samurai Gattai ShinkenOh is formed when the Shinkengers write the kanji for "unite" to make their Origami to combine. There are 51 pages of uncolored parts.
Two more Shinkengers have arrived. These two are both girls: Kotoha Hanaori/Shinken Yellow and Mako Shiraishi/Shinken Pink. 
Shinken Green is Chiaki Tani while Shinken Blue is Ryunosuke Ikenami. They are two of the six shinkens from Samurai Sentai Shinkenger Toei Company's long-running Super Sentai Series of Japanese tokusatsu television series.
It appears that this one is called Red Shinkenger from the Samurai Sentai Shinkenger series. Thanks to anon for the info.