Ultraman: Starting As a Villainous Underling and Growing Stronger

A massive dump truck transported Xia Wen to the world of Ultraman. He became cannon fodder in the Gua Legion, one of the universe's strongest villains, and the legion was on its way to attack the Land of Light. Me, a mere grunt, fighting Ultraman? Are you kidding me?! Fortunately, the transmigration also brought Xia Wen a system. The system not only granted him the ability to transform into Ultraman, but also allowed him to continuously grow stronger by defeating monsters. ...On the battlefield, Xia Wen looked at his comrade whose head had been twisted off and calmly said, "Sorry, I'm a space policeman."