deathfacer
A robotic mecha from Ultraman_Tiga_&_Ultraman_Dyna:_Warriors_of_the_Star_of_Light.
Originally known as Prometheus, this mecha was built by TPC, the organization from Ultraman Tiga (series) and Ultraman Dyna (series).
It was then hijacked by the Monera aliens, and was transformed into a giant robot to defeat Ultraman Dyna.