Chrome Dome is a huge robot built by the Shredder to supervise the Foot Soldiers in the construction of the Technodrome Mark-II. He has many built-in weapons such as blasters, cannons, missiles, etc. He was destroyed by the Turtles by disabling a main chip on his back. He returned in another episode "Night of the Rogues" with several other villains as one of Shredder's Rogues. He was defeated when Casey Jones crushed him in a hydraulic press. What happened to his remains after that remains unclear.
According to Shiny and Chrome!, Chrome Dome was eventually rebuilt by Albert McGuffin and successfully ran for mayor of New York City.