Roba is the twin brother to Horace and friend of Alfe. He live with both characters and works as a Problem Solver for the town of Farboro.
Roba is incredibly anxious and can be a bit uptight. He is shown occasionally to be scared of germs but this appears to fluctuate throughout the show. He has been shown to dislike being outdoors but does enjoy gardening.
Horace is Roba's twin brother. The two have a mostly positive relationship but don't always get along.
Alfe and Roba don't get along most of the time. He would tease him about lots of stuff. They get into fights time to time during solving a problem. then he teased him about beans.
Tux Dog and Roba don't get along at all. Roba has said that he thought Tux Dog was mean.
- According to the episode, "Problem Solverz Academy", high school was "the worst time of his life".
- Roba is a robot.