- For the character in the Archie Comics, see Pseudo-Sonic. For the television episode, see Pseudo Sonic (episode).
Pseudo Sonic first appeared in the episode "Pseudo Sonic". He was built by Robotnik to frame Sonic for numerous acts of hooliganism. Pseudo Sonic was not a sentient Badnik in the cartoon, but a mindless mech piloted by a mouse named Lawrence, one of Robotnik's captives. Like Metal Sonic, Pseudo is described by Robotnik as being "one of his greatest inventions ever".
- The plots of Pseudo Sonic's first appearances in both the Adventures of Sonic the Hedgehog TV series and the Archie Comics had Sonic encounter poison flowers. This led many to assume that the comic was simply adapting the cartoon.
- Pseudo Sonic needing an animal to pilot it appears to be a reference to the Badniks of the game series being powered by animals (aka organic batteries).