Spinoff Omnibots

"Spinoff" Omnibots are robots made by other companies that use the base design of the Omnibot. Robots in this category include Hearoid, OOM, and Robie Sr.

Hearoid and OOM
These robots are essentially Omnibots without a programmable computer, a different head, and a blue color scheme. Instead opting to use the cassette player exclusively as a way of programming the robot. Hearoid and OOM (Japanese version) were built by TCC for TOMY.

Robie Sr.
Robie Sr was essentially a Hearoid robot rebranded and sold by Radio Shack without the voice controls. Like Hearoid and OOM, this robot was programmable from the cassette tape and had a different color scheme (black and red). Despite looking similar to the Hearoid, it is functionally similar to the original Omnibot 5402. As with the Omnibot, the remote also has 3 miscellaneous buttons located on the left side. The first button will toggle the tape player on/off, provided the "PLAY" button is physically pressed on the robot. The second button is a toggleable headlight, while the third button will play both "Omnibot Sounds" (although more simple and musical).