You may be looking for Caterkiller.
Flight Electricity generation
Catakiller, Jr.  (, alternatively spelled as メラモーラ  Meramōra ) ? Caterkiller Jr.,  is an enemy that appears in the [note 1] . They are a mass-produced, caterpillar-inspired Sonic the Hedgehog series Badnik model created by Dr. Robotnik and a successor of the Caterkillers.
Much like the
Caterkillers, Catakiller, Jr.s are based on caterpillars. These Badniks' bodies are composed of seven blue and spherical segments. The first of these segments serves as the head which has small black eyes. Their next three body segments after the head have electricity generator rings around them.
Sonic the Hedgehog 3
, Catakiller, Jr.s appear only at Sonic the Hedgehog 3 Angel Island Zone where they hover back and forth at medium speed in midair. When the playable characters get close to them, they will release what appears to be electrical waves from the generator rings on their body segments which can damage the player even if they possess a Thunder Shield.
These Badniks can only be defeated by attacking their head. Touching any other part of their body, even if they are not releasing their electric attack, will damage the player.
, and its expansion Sonic Mania , the Catakiller, Jr.s appear as enemies. In terms of design, they look exactly like they did in their debut game. In these games, they appear in Sonic Mania Plus Chemical Plant Zone. They also appear in Angel Island Zone, which is exclusive to the Encore Mode in . This makes the Catakiller, Jr.s the only Badniks in the game to appear across multiple Zones.
Sonic Mania Plus
In gameplay, the Catakiller, Jr.s float around like in
. Their heads also remain the only spot on them that the player can attack without sustaining damage in any situation.
Sonic the Hedgehog 3
Upon their destruction, they release an
Animal. When destroyed in this game however, instead of breaking up into its segments and falling away like it is supposed to, a Catakiller, Jr. breaks up into a bunch of duplicates of its head.
↑ While not listed in any instruction manuals, the internal files in the
PC release of refers to this enemy as "CaterkillerJr". Sonic Mania
Main articles ( , Sonic 3 , Sonic & Knuckles , Sonic 3 & Knuckles ) | Staff ( Sonic & Knuckles Collection , Sonic 3 , Sonic & Knuckles ) | Manuals ( Sonic & Knuckles Collection , Sonic 3 ) | Glitches ( Sonic & Knuckles , Sonic 3 , Sonic 3 & Knuckles ) | Beta elements ( Sonic & Knuckles Collection , Sonic 3 , Sonic & Knuckles ) | Galleries ( Sonic 3 & Knuckles , Sonic 3 , Sonic & Knuckles ) Sonic & Knuckles Collection
Sonic ( Super Sonic, Hyper Sonic) | Tails ( Super Tails) | Knuckles ( Super Knuckles, Hyper Knuckles) | Dr. Robotnik | Mecha Sonic ( Mecha Sonic's Super State) | Animals ( Flicky ( Flicky's Super State), Pocky, Pecky, Cucky, Ricky, Rocky)
Batbot | Blaster | Blastoid (Carnival Night Zone) | Blastoid (Hydrocity Zone) | Bloominator | Bubbles | Bugernaut | Butterdroid | Catakiller, Jr. | Chainspike | Clamer | Cluckoid | Corkey | Dragonfly | EggRobo | Fireworm | Flybot767 | Hyudoro | Iwamodoki | Jawz | Madmole | Mantis | Mega Chopper | Monkey Dude | Mushmeanie | Orbinaut | Penguinator | Pointdexter | RhinoBot | Ribot | Rock'n | Sandworm | Skorp | Snale Blaster | Spikebonker | Spiker | Star Pointer | Technosqueek | Toxomister | Turbo Spiker
Angel Island Zone | Hydrocity Zone | Marble Garden Zone | Carnival Night Zone | IceCap Zone | Launch Base Zone | Special Stages | Bonus Stages
Sonic & Knuckles
Mushroom Hill Zone | Flying Battery Zone | Sandopolis Zone | Lava Reef Zone | Hidden Palace Zone | Sky Sanctuary Zone | Death Egg Zone | The Doomsday Zone | Special Stages | Bonus Stages
Azure Lake Zone | Balloon Park Zone | Chrome Gadget Zone | Desert Palace Zone | Endless Mine Zone
Doctor Robotnik's Flame Craft | Doctor Robotnik's Whirlpool Machine | Tunnelbot | Self D-Struct Machine | Iceball | Swing'm Spikez | Hei Hou | Gapsule | Barrier Eggman | Guardian | Heat Arms | Egg Mobile-H | Flying Eggman | Red Eye | Death Ball
Doctor Robotnik's Flame Craft | Doctor Robotnik's Waterspout and Depth Charge Machine | Doctor Robotnik's Jet Drill Pod | Doctor Robotnik's Energy Ship | Doctor Robotnik's Freeze-O-Matic | Ball Shooter | Beam Rocket | Big Arm | Jet Mobile | Hang Mobile | Egg Golem | Hot Mobile | Knuckles | Mecha Sonic | Mecha Sonic's Super State | Great Eggman Robo | Final Weapon
Bound Jump | Crouch | Double Jump | Fireball Spin Dash | Glide | Gliding Knuckles Attack | Hyper Flash | Insta-Shield | Propeller Flying | Spin Jump | Spin Dash | Spin Attack | Wall Climb
Air Bubble | Balloon | Banana | Bomb | Booster | Bumper | Bumper wall | Cannon | Capsule | Change | Chaos Emerald | Cloud | Continue | Fan | Jump Stand | Monitor ( Water Shield, Flame Shield, Invincibility, Lightning Shield, Super Ring, Super Shoes, Extra Life, S, Eggman) | Movable box | Mushroom | Pulley | Ring | Signpost | Self-Propelled Bomb | Slow-Down Shoes | Snowboard | Sphere | Spikes | Spring | Spinning Top | Star Post ( Star Circle) | Super Emerald | Switch | Transport | Vine | Zip Line
Angel Island | Barrel | Conveyor Belt | Corkscrew loop | Crusher | Death Egg | Debug Mode | Fireball Cannon | Flipper | Flywheel | Freeze | Giant spear | Goal | Gravity Control Switch | Gumball | High-speed elevator | High-speed warp tube | Icicle | Iron ball | Jewel Radar | Perfect Bonus | Platform-raising Wheel | Pole Elevator | Relief | Reverse | Ring Shooter | Rock Drill | Seesaw | Shuttle loop | Slot machine | Snowblower | Sonic & Knuckles • Sonic the Hedgehog 3 | Strange Relief | Time Attack | Tornado | Warp Point | Winding Tunnel | Wonderman
Main article | Staff | Glitches | Beta elements | Gallery | Re-releases ( Plus)
Sonic ( Super Sonic) | Tails ( Super Tails) | Knuckles ( Super Knuckles) | Mighty* ( Super Mighty*) | Ray* ( Super Ray*)
Dr. Eggman | Hard Boiled Heavies ( Heavy King, Heavy Gunner, Heavy Shinobi, Heavy Magician, Heavy Rider) | Phantom Heavies ( Phantom King, Phantom Gunner, Phantom Shinobi, Phantom Magician, Phantom Rider) | Metal Sonic ( Giga Metal) | Animals ( Becky, Cucky, Flicky, Locky, Micky, Pecky, Picky, Pocky, Ricky, Rocky, Tocky, Wocky) | Jimmy
Zones Angel Island Zone* | Green Hill Zone | Chemical Plant Zone | Studiopolis Zone | Flying Battery Zone | Press Garden Zone | Stardust Speedway Zone | Hydrocity Zone | Mirage Saloon Zone | Oil Ocean Zone | Lava Reef Zone | Metallic Madness Zone | Titanic Monarch Zone | Egg Reverie Zone | Special Stage | Bonus Stage | Pinball Stage*
Armadiloid | Aquis | Asteron | Ball Hog | Batbrain | Blaster | Blastoid | Bloominator* | Bugernaut | Bumpalo | Buzz Bomber | Cactula | Canister | Catakiller, Jr. | Chopper | Clucker | Crabmeat | Dango | Dragonfly | Eggrobo | Fireworm | Flasher mk.II | Gohla | Grabber | Hotaru | IceBomba | Iwamodoki | Jawz | Jellygnite | Juggle Saw | Kabasira | Kanabun | Madmole | Matryoshka-Bom | Mega Chopper | Mic Drop | Monkey Dude* | Moto Bug | Newtron | Octus | Pointdexter | Rattlekiller | Rexon | RhinoBot* | Robot Bee | Robot Beetle | Roller mk.II | Scarab | Sentry Bug | Shutterbug | Silver Sonic | Spiny | Splats | Sweep | Technosqueek | Toxomister | Tubinaut | Turbo Spiker | Turbo Turtle | Vultron | Woodrow
DD Wrecker | Amoeba Droid | Heavy Gunner | Big Squeeze | Shiversaw | Hotaru Hi-Watt | Dive Eggman | Uber Caterkiller | Meter Droid | Drillerdroid | Egg Pistons mk.II | Crimson Eye
Death Egg Robot | Mean Bean Machine | Weather Globe | Spider Mobile | Heavy Shinobi | Metal Sonic | Laundro-Mobile | Heavy Magician | Mega Octus | Heavy Rider | Heavy King | Gachapandora | Phantom Egg | Phantom King and Klepto Mobile
Air Glide* | Bounce Jump | Climb | Crouch | Double Jump | Drop Dash | Fireball Spin Dash | Glide | Hammer Drop* | Insta-Shield | Propeller Flying | Ring Spark Field | Spin Attack | Spin Dash | Spin Jump | Super Peel Out | V. Maximum Overdrive Attack
Gimmicks and obstacles
Beanstalk | Bomb | Bumper | Bungee Rope | Bumper wall | Capsule | Conveyor Belt | Crusher | Dash Panel | Electrical conduit | Fan | Fireball Cannon | Flipper | Flywheel | Goal Plate | High-speed warp tube | Ice Spring | Iron ball | Jump Panel | Platform-raising Wheel | Pulley | Ruby Mist | Seesaw | Size Beam | Snowblower | Spikes | Spring | Star Post | Switch | Transport | Vine | Zip Line
Air Bubble | Chaos Emerald | Giant Ring | Giant spear | Item Box ( 1-UP, Blue Shield, Bubble Shield, Character*, Hyper Ring, Eggman Mark, Fire Shield, Invincible, Lightning Shield, Player Swap, Power Sneakers, Random, S, Super Ring) | Little Planet flowers | Master Emerald | Metal Sonic Projector | Medallion | Ring | Robot transporter | Schrodinger's Capsule* | Sphere | Star Circle | Time Warp sign | UFO | Warp Point
Sonic Mania (vinyl album) | Sonic Mania Original Soundtrack (Selected Edition) | Sonic Mania Plus Original Soundtrack
Angel Island | Auto Running | Continue | Death Egg Robot | Debug Mode | Egg Mobile | Freeze | Hang Glider | Klepto Mobile | Level Select | Little Planet | Mega Mack | Perfect Bonus | Phantom Ruby | Rock Drill | Shuttle loop | ( Sonic Mania Adventures Sonic Returns, Sonic and Tails, & Knuckles, Mighty and Ray, Metal Mayhem, From: A. Rose, The Complete Mini-Series) | Time Attack | Time Over | Time Warp | Tornado | Winding Tunnel
Sonic Mania Plus only