ES Gokin (ES合金) is a toy line designed by Awaken Studio and produced/manufactured by Hong Kong Action Toys. The line consists of SD (Super Deformed) Die-Cast robots. It was first introduced and released in the year 2009. One of the selling points of the figures/robots is the articulation design. Despite it having limited mobility, they are still considered rather flexible enough to evoke some of the memorable moves and attacks seen in each of the robots respective series.