Bubbler (バブラー) was set to appear in Chemical Plant Zone in the game Sonic the Hedgehog 2; however, it was scrapped like its "parent."
It is dropped onto the ground by Bubbler's Mother and would then proceed to bubble up before exploding.
- While it did not return as a normal enemy in the Christian Whitehead-produced 2013 mobile re-release of Sonic the Hedgehog 2, it does appear as a new Chemical Plant object in Debug Mode.
- Its eyes were edited into the sprite of Knuckles the Echidna glaring from the bushes in the extended good ending of the 2013 re-release.
Sonic the Hedgehog 2
Main article | Gallery | Prereleases (Nick Arcade | Simon Wai) | Re-releases (2006 | 2013) | Knuckles in Sonic 2
||Sonic (Super Sonic) | Tails (Super Tails**) | Knuckles (Super Knuckles) | Dr. Robotnik | Animals (Becky, Flicky, Pocky, Pecky, Cucky, Ricky, Picky, Rocky, Locky, Wocky, Rat, Tocky, Tux, Chirps)
||Aquis | Asteron | Balkiry | Banper* | BBat** | BFish* | Bubbler* | Bubbler's Mother* | Buzzer | Cactus* | Chop Chop | Clucker | Coconuts | Crawl | Crawlton | Flasher | Frog* | Gator* | Gohla | Grabber | Grounder | Jellies** | Lobster* | Masher | Nebula | Octus | Rexon | Shellcracker | Slicer | Snail* | Spiker | Spiny | Stegway** | Turtloids | Redz** | Whisp
||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 | Hidden Palace Zone** | Genocide City Zone* | Dust Hill Zone* | Rock Zone* | Wood Zone* | Egg Gauntlet Zone** | Boss Attack Zone** | Proto Palace Zone** | Special Stage
||Drill Eggman | Water Eggman | Tonkachi Eggman | Catcher Eggman | Submarine Eggman | Drill Eggman II | Brass Eggman** | Submarine Eggman II | Flying Eggman | Barrier Eggman | Mecha Sonic | Death Egg Robot
||Climb | Glide | Spin Jump | Super Dash Attack | Super Spin Attack | Insta-Shield**
||Ring | Monitor (Super Ring, Shield, Power Sneakers, Invincibility, Extra Life, Teleporter, Eggman, Lightning Shield**, Flame Shield**, Water Shield**, S** | Continue | Spring | Star Post | Bumper | Switch | Air Bubbles | Signpost | Capsule
||Original Soundtrack | West Side Island | Bumper wall | Chaos Emerald | Debug Mode | Spikes | Gondola | Corkscrew loop | Totem pole | Shuttle loop | Booster | Winding Tunnel | Crusher | Seesaw | Bomb | Cannon | Fan | High-speed elevator | Conveyor Belt | Tornado | Doctor Eggman's rocket ship | Mega Mack | Perfect Bonus | Pinball Shooter | Slot machine | Spear | Spiked ball | Stone pillar | Flipper | Gallery
*Exclusive to the prototype versions of Sonic the Hedgehog 2.
** Exclusive to the 2013 re-release version.