This is a posable action figure from the Nendoroid series.
From the Good Smile Company website:
From the popular anime series "TERRAFORMARS REVENGE", comes a fully articulated Nendoroid of the Annex I Vice Captain and team leader of the Japan-America Joint Unit 2 - Michelle K. Davis! She comes with her standard expression as well as a two expressions in her transformed form - a glaring expression and an expression for blowing poisonous gas.
Optional parts include the injector she uses to transform as well as armored arm parts for her transformed form. Special effect parts to display her blowing poison gas are also included, and as the figure is fully articulated you can recreate all sorts of action scenes from the series!