Gray, silver, green Gray, silver, yellow
Jellygnite,  or  Jellies, is an enemy in the  . It is a mass-produced, jellyfish-based Sonic the Hedgehog series Badnik created by Dr. Eggman.
Jellygnites are based on
jellyfish; their main body is a metallic cap with a pair of eyes and three tentacles sprouting from their bottom. Each tentacle consists of four ball segments.
Sonic the Hedgehog 2 (2013)
2013 re-release of , the Jellygnites appear as enemies. In this game, they are only found floating around in the underwater sections of Sonic the Hedgehog 2 Hidden Palace Zone.
Similar to the
Grabbers, the Jellygnites have more realistic movements. If a character gets caught in their long arms, it will electrify them and blow themselves up a short while afterward (without releasing an Animal) to damage the player. Like the Grabbers, the player can escape the Jellygnites' grasp by tapping left and right repeatedly. To destroy a Jellygnite, the player has to hit it from above to avoid being grabbed.
, and its expansion Sonic Mania , the Jellygnites reappear as enemies. In terms of design, they look much like how they did in their Sonic Mania Plus debut, except their spots are now yellow. In these games, they appear underwater in both Acts of Hydrocity Zone.
In gameplay, the Jellygnites behave just like in their debut game: they swim up and down, and will catch those who get near them before trying to self-destruct. Also, upon destroying a Jellygnite, it will release an
Powers and abilities
The Jellygnites have an ability to swim. When they manage to catch their prey in their tentacles, they are able to self-destruct to inflict damage to their captive.
Being the only new
Badnik to be featured in the 2013 re-release of Sonic 2, Jellygnites do not appear in any known prototype versions of the game and were likely an original concept for the Zone's official re-creation.  Jellygnite's name may be a pun on "jellyfish" and "gelignite", a type of gelatin-like explosive.
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Zones Emerald Hill Zone | Chemical Plant Zone | Aquatic Ruin Zone | Casino Night Zone | Hill Top Zone | Mystic Cave Zone | Oil Ocean Zone | Metropolis Zone | Sky Chase Zone | Wing Fortress Zone | Death Egg Zone | Green Hill Zone* | Hidden Palace Zone** | Genocide City Zone* | Sand Shower Zone* | Rock World Zone* | Wood Zone* | Egg Gauntlet Zone** | Boss Attack Zone** | Proto Palace Zone** | Special Stage
Aquis | Asteron | Balkiry | Banper* | Batbot** | BFish* | Bubbler* | Bubbler's Mother* | Buzzer | Cactus* | Chop Chop | Clucker | Coconuts | Crawl | Crawlton | Flasher | Frog* | Gator* | Gohla | Grabber | Grounder | Jellygnite** | Lobster* | Masher | Nebula | Octus | Rexon | Shellcracker | Slicer | Snail* | Spiker | Spiny | Stegway** | Turtloids | Redz** | Whisp
Drill Eggman | Water Eggman | Hammer Eggman | Catcher Eggman | Submarine Eggman | Drill Eggman II | Hidden Palace Zone boss** | Submarine Eggman II | Flying Eggman | Barrier Eggman | Mecha Sonic | Death Egg Robot
Crouch | Glide | Insta-Shield** | Propeller Flying | Spin Jump | Super Dash Attack | Super Spin Attack | Swim**
Gimmicks and obstacles
Bomb | Booster | Bumper | Bumper wall | Cannon | Capsule | Conveyor Belt | Crusher | Fan | Flipper | Giant spear | Goal Plate | Gondola | High-speed elevator | High-speed warp tube | Iron ball | Jump Panel | Metal nut | Seesaw | Slot machine | Spikes | Spring | Spring Catapult | Star Post | Stone pillar | Switch
Air Bubble | Chaos Emerald | Monitor ( Eggman, Extra Life, Flame Shield**, Invincible, Lightning Shield**, Power Sneakers, Random, S**, Shield, Super Ring, Teleporter, Water Shield**) | Ring | Star Circle
Sonic the Hedgehog 1&2 Soundtrack
Continue | Corkscrew loop | Death Egg Robot | Debug Mode | Egg Jet | Mega Mack | Perfect Bonus | Shuttle loop | Time Attack | Tornado | Totem pole | West Side Island | Winding Tunnel
*Exclusive to the prototype versions of
Sonic the Hedgehog 2. ** Exclusive to the 2013 re-release version.
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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 | Rock Drill
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 | Swim | V. Maximum Overdrive Attack
Gimmicks and obstacles
Beanstalk | Bomb | Bumper | Bungee Rope | Bumper wall | Cannon | Capsule | Conveyor Belt | Crusher | Dash Panel | Electrical conduit | Fan | Fireball Cannon | Flipper | Flywheel | Goal Plate | Hang Glider | 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 | Klepto Mobile | Level Select | Little Planet | Mega Mack | Phantom Ruby | Perfect Bonus | Popgun | 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