Pseudo Sonic is a classic badnik created by Dr. Ivo Robotnik as his first robot version of Sonic. Unlike Metal Sonic, Mecha Sonic, and Silver Sonic, this robot was quite bulky, but it was just as fast as they were.
Robotnik's latest "ultimate creation" was designed using everything Robotnik knew about Sonic, and proved to be a pain to test. Not only was it insulting Robotnik, but its means of showing its abilities consisted of throwing Robotnik off a cliff. Annoyed, Robotnik ordered Pseudo Sonic to try and find Knothole Village. Antoine D'Coolette mistook him for Sonic (blaming the darkness and the artist) and inadvertently allowed Pseudo Sonic to find Knothole's entrance. Before he could tell Robotnik the coordinates to Knothole, he was short-circuited by Tails's trick with static electricity. Pseudo was tossed in the garbage. (StH: #9)
Misfit Badnik Island
Years later, Sonic learned of an Island of Misfit Badniks, and decided to investigate. He found almost a dozen of his old foes, all of whom he had fought before except one. Pseudo Sonic explained that he had hoped to have a fight with Sonic, but last time, Sonic was MIA due to an unpleasant experience with Poison Sumac flowers. When they duked it out, a Crabmeat unit noted that the two were evenly matched. A bighorn challenge seemed prudent. With Orbinaut acting as a judge, Sonic and Pseudo rammed each other at full speed. The vibration from the impact sunk the island, while the badniks faked their deaths. Sonic escaped with only a headache, but Pseudo had fallen apart. The Badniks promised to repair him and get revenge on Sonic. (StH: #170)
A Burrobot unit noted that Pseudo has a Ratio-Redoubler, and decided to use it to enlarge Pseudo Sonic. They planned to use a the giant Pseudo Sonic as a means of revenge, but had a setback when the Forty Fathom Freedom Fighters attacked. Burrobot had to finish construction himself, while Caterkiller and Ballhog led the other badniks to stop the intruders. When Pseudo Sonic awakened, he knocked away everyone, Burrobot included, and declared himself the biggest thing on Mobius. Then Big Fluke sat on Pseudo, and crushed him, the badniks and the island into a cube. It is doubtful that he will return, as only Coconuts was able to get away. (StH: #185)
- Pseudo Sonic has no direct game counterpart, (the Metal/Mecha/Silver Sonics don't count). Outside of the comics, his only appearance was in the Adventures of Sonic the Hedgehog, in which he was built to frame Sonic for numerous acts of hooliganism. Pseudo Sonic was not a sentient badnik in the cartoon, but was instead a mindless mech piloted by a mouse. Coincidentally, both plots had Sonic encounter poison flowers, causing many to assume that the comic was simply adapting the cartoon. Many elements from the show were featured in the comic before it was decided to change the comic's tone.
- Strangely, Pseudo Sonic appeared alongside Sonic and Evil Sonic on the cover of Sonic Archives: #3, (which reprinted Pseudo Sonic's first appearance in StH: #9), even though the three of them have never appeared together in the same story at all. Of course, this fits in with the creative license used in the Archives covers, such as the appearance of Buns Rabbot with the rest of the Anti Freedom Fighters on the cover of another Sonic Archives volume despite Buns not showing up until a much later issue not printed in that respective volume.
- Pseudo Sonic has the fourth longest "non-appearance gap" in the comic series at 161 issues (StH: #9-170).
- Despite being the first ever Sonic robot, he was not the first to be encountered by Sonic, due to his being defeated before meeting his organic counterpart in his first appearance. As the result, the original Mecha Sonic holds the honor of being the first to meet Sonic.
- The new version of Mecha Sonic envisioned by Dr. Eggman in his post-Super Genesis Wave reality resembled Pseudo Sonic, but incorporated more elements of Sonic's modern design.
- Pseudo Sonic was the last Adventures of Sonic the Hedgehog character to debut in the comics proper until the Archie version of Breezie the Hedgehog was introduced about 20 years later.
- In The Complete Sonic Comic Encyclopedia, Pseudo Sonic is written with a dash between the two words, resulting in Pseudo-Sonic.