She was originally sent by Sparky to cover for Betty at home when Betty herself was on an adventure. However, in the middle of Maximus's latest death trap, Betty discovers this and recalls her as she and her crew was captured by Maximus. Robo-Betty manages to free Betty and her crew, but when the object of their mission, Captain Lure, was revealed to be a cheeper model of robot carrying a bomb, Robo-Betty attempts to remove Captain Lure by pushing it out of the ship and into space. However, Lure had managed to hold on to Robo-Betty, removing her from the ship as well, Lure drifted back to Maximus's base Robo-Betty was presumed lost in space. (Robo-Betty (episode))
In reality, she had survived and drifted the galaxy before landing on Crushton, where she was repaired by B-1 (who refers to her as his robo-niece). When, on another mission, Betty is forced to have her heavily-damaged ship repaired on Crushton from being repeatedly battered by a super-powered Maximus, Robo-Betty resurfaces and holds Maximus off long enough for the rest of group to drop him into a form of home made acid corrosive to Maximus's suit, but harmless to organic life. Robo-Betty is seen taking Maximus into custody having apparently been made a honourary, and later official, Galactic Guardian. (Best Dressed Villain)
Robo-Betty would reappear in "Rodeo Robots", where she was taken over by the villain Dr. Cerebral using an old universal remote control he had discovered on Crushton. However, Betty and B-1 had managed to break Cerebral's control over her and she helped save Betty, Sparky, and X-5 from Dr. Cerebral. (Rodeo Robots)
Robo-Betty is identical in appearance to Betty, though in the first two seasons, her eyes would occasionally glow red and her holographic coating would occasionally expose the robot underneath, to differentiate her from the real Betty. In Mission: Earth, her eyes have gained a permanent red color and her holographic coating no longer malfunctions. This change in appearance is likely the result of being rebuilt by B-1.
- In Rodeo Robots, Robo-Betty remembers B-1 changing her spark plugs when she was a baby, this flashback likely takes place after she was lost in space, but before she was found on Crushton by Sparky and X-5.
- This also creates a continuity error, in Robo-Betty's first appearance she was created in the exact image of Betty, while in the clip she has regressed into infancy. It's possible this is the result of damage from landing on Cruston.
- When she sees Chaz in Rodeo Robots, she immediately becomes infatuated with him, much like the real Betty.
- if robo betty is b1's robo neice she and x5 are siblings