When he was tasked with investigating the blackout across the Pacific Northwest in the United States, Dr. Robotnik took his Badniks with him. Arriving in Green Hills, he initiated a preliminary sweep of a ten mile radius using his Badniks. Eventually, one of them found a footprint left by Sonic the Hedgehog, which Robotnik was able to analyze and determine Sonic's anatomy from.
Afterward, some Badniks accompanied Robotnik into Tom Wachowski's house, where they traced some of Sonic's energy. After the hedgehog revealed himself, the Badniks tried to attack him, only to be destroyed by Sonic and Tom together.
Days later, Dr. Robotnik sent some Badniks to attack Sonic and Tom while they were going to San Francisco. While the robots were destroyed, Sonic got knocked out in the process.
Later, Robotnik and some of his Badniks attacked Sonic, Tom and Maddie Wachowski on top of the Transamerica Pyramid in San Francisco, only for many of the robots to be destroyed by Sonic.
The most commonly used model is a floating robot with a red camera eye approximately two feet in length and one foot in diameter. They are equipped with two twin machine gun mounts, and four retractable missile launchers. In spite of their massive offense capabilities, they must reload their machine guns periodically, during which they are vulnerable.
A smaller reconnaissance variant of this model was deployed by Robotnik to search the house while he spoke with Tom Wachowski. This variant used rotor blades to hover through the air.
A tiny helicopter robot pops out of the remains of terrain drones. Highly destructive, this one is armed with a laser capable of cutting through steel. In a last-ditch effort, the robot's eye can becomes a sticky bomb and attach itself to any surface.
After pinpointing Sonic and Tom's location, Robotnik dispatches a massive tank robot named Mayhem to intercept them. This robot's primary offense is a harpoon gun capable of catching a pickup truck.
After Mayhem was destroyed, a smaller robot ejects from the wreckage to continue the chase. This robot attempts to disable Tom's truck by firing EMP mines, but is defeated when Sonic attaches one of the mines to its eye.
Another robot emerges from the remains to pursue the duo. This robot is roughly the same size as the standard flying variant, but sports a slightly different design and instead travels on a single wheel. It is equipped with two tire-shredding blades. This one is destroyed by Tom, angering Robotnik.
↑Although they have no official name, they are affectionately referred to as "Badniks" by Robotnik via a label on his breaker box.