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Rex Robot is a minor antagonist character in The Backyardigans.
Rex Robot is Evil, Intimidating and Ruthlessly Loyal to his master, Professor Bug. And stops at nothing to fulfill his masters wishes.
Rex Robot, is extremely different from the robots in mega city. He is much taller and has a black paint job and a blood red color scheme. He also has bright red eyes and a deep intimidating voice.
Rex Robot has appeared in one episode of The Backyardigans: "Robot Rampage: Part 2" from season four.