Crawlton

Crawltons (ザキーン) are a badniks that resemble a centipede and are created by Doctor Robotnik. Crawlton's first game appearance has been in Sonic the Hedgehog 2, where it can be found hiding and attacking quickly its target from walls.

Sonic the Hedgehog 2
In Sonic the Hedgehog 2, these badniks can be found at Mystic Cave Zone, hiding within the walls and waiting the player to come closer. It starts attacking quickly surging from above or below toward, which can hurt the player.

Before the conformation, the player is able to see Crawlton's head or parts of its body being visible within the walls, which tends to reveal badnik's whereabouts. Sometimes Crawltons can easily be avoided while moving fast or badniks don't have enough of its body to achieve its target. Crawltons can be defeated by simply Spin Jumping on its head after revealing itself.

Sonic Lost World
Numerous years later, Crawlton badniks are making appearance in upcoming Sonic Lost World, where they are featured at Desert Ruins Zone. During the game, it turns out that badniks, Crawltons included, got hijacked by Deadly Six. Like in Sonic the Hedgehog 2, they can be seen hiding on small bushes of the desert, while most of time, they can be seen attacking on groups as well.

Physical Appearance
Crawltons seem to be successors or just sharing design similarities with Caterkiller from original Sonic the Hedgehog. These badniks have eight round-shaped segments, including its head. It is colored above dark blue while bottom section is mostly yellow. Each segment has two yellow spikes, one each side. The head section has eyes, two pointy antennas on top of its head, two long scissor teeth and two plates on each side of its "ear" sections. Crawltons are seen sort of small mouth between scissor teeth.

Abilities
Crawltons hide within the walls. When the player comes near, it pokes itself out of its hiding place for a surprise attack. It can only be attacked on its head due to the harmful spines on its body, which can also hurt the player.

Sonic the Comic
Crawltons have become sort of recurring badnik type at Robotnik's army in the Fleetway's Sonic the Comic. They are seen to be replacement of Caterkiller badniks, while sharing same color scheme as well. Although few times Crawltons are seen to have their original blue/yellow color scheme, when stories are drawn by Ferran Rodriguez.

Crawltons are first seen in issue 23's story "Pirates of the Mystic Cave", when Captain Plunder and his pirates based themselves in the Mystic Cave Zone. They stole several Crawltons and Flashersand used them to defend their hideout. These Crawltons did not include organic batteries and were defeated by the Freedom Fighters. Later Crawltons are then seen on Robotnik's badnik army, during an assault on Kintobor's Laboratory at issue 37's and 38 story "Robotnik's Revenge". As the base being underground, Robotnik utilized Crawltons, Grounders, Tunnelbots and Squeeze Tag Machine (driven by himself) to dig through one of the blocked entrances. Crawltons are seen watching while Sonic and Robotnik traded blows and aren't called into action until Knuckles the Echidna shows up. The battle takes place now to outside, where the Sonic, Knuckles and Johnny eventually defeated all Crawltons and other badniks.

Since then, Crawltons aren't generally seen or used by Robotnik, thus getting diminished to patrolling underground areas, that the Freedom Fighters weren't likely to visit. In issue 74's story "Fox On The Run", Tails faces a large Crawlton underneath the Spring Flower Zone. Tails used his aerial ability to tie up the Crawlton and pushes it then into the lava. The most likely this Crawlton hasn't organic battery. In issue 89's story "A New Hope", Crawlton is seen with other badniks as wearing down the Freedom Fighters. As Shortfuse the Cybernik becomes helping the team, Crawlton has been dispatched.

During the invasion of Flickies' Island at issue 105's story "Flickies' Island", Robotnik created newly designed Crawltons, that starts to look more closely to Caterkillers with similar antennas. These new models are more dangerous, menacing looking and fitted with spikes on its head to minimize the surface area that could possibly pose as a weak spot. Along with other badniks at the time, these Crawltons were grey as Robotnik had not gotten round to painting them. Apparently it seems that Robotnik start to experiment with new badnik designs and Crawlton has quickly been forgotten. In issue 128's "Yesterday's Heroes", it has seemingly given one chance to shine by attacking the Sunshine Valley Zone, although it was later revealed that this old model was a version Robotnik had ceased building years ago. Tekno the Canary also discovered that they were programmed by Big Bill Screwloose, a duck eager to make the citizens lose faith in heroes.

Sonic the Hedgehog: The Movie
In Sonic the Hedgehog: The Movie, a Crawlton attacks Sonic head-on while he and Tails are on their way to Robotropolis. Sonic effortlessly destroys the Crawlton without thinking twice, slicing it to pieces. This Crawlton was longer than its game counterpart, and had a pink color-scheme, making it look similar to Caterkiller. Also, the Crawlton was capable of moving freely like Catakiller, Jr., unlike the average Crawlton, which stays in one place.