From ThreeA Wiki
Wave Four, oft stylized "WAVE FOUR," is the forth series released in the World War Robot Portable toy line by ThreeA. Wave Four was available for pre-order on 20 April 2010 and consisted of Armstrong packs that included variations of Armstrong 1G and Armstrong 0G.
Wave Four packs
A list of packs released in Wave Four:
Designer Toys, Urban Vinyl Toys, threeA Toys