Gemini, an evil toa of plasma. Torso is based on one created by CBW user Bobthedoctor27. Story can be found here: http://custombionicle.wikia.com/wiki/Gemini_(Storm_Alternate_Universe)
Note: This is not the first, nor latest version of Gemini. He started out as an Inika build. :/ Don't know why two pics are sideways.