Gamma

Came from the future, height 1 m weight 1 ton Gamma try to bring a piece in the earth from alien. He never let any alien survive in this eart, he is the strongest who bring the bazooka weapon everywhere. this is the war side of Aliens and Robots, human is died. you are the only human left, you hide in your home for along time. but Gamma find you then suddenly lock you as enemy, what you will do for saving human being?