TechnoSqueek (チューチュー Chūchū?, lit. "Chu-Chu"), alternatively spelled Technosqueek, is a mouse-type Badnik created by Dr. Robotnik. It appears at Flying Battery Zone in Sonic & Knuckles and Sonic the Hedgehog 3 & Knuckles.
Its design is a combination of a rodent mouse and a computer mouse. TechnoSqueek has the ability to run back and forth along the ground, walls, and even the ceiling.
- It is pictured and named with all the Badniks in the English Sonic the Hedgehog 3 manual, even though it does not appear in that game.
- TechnoSqueek, along with other enemy sprites from Flying Battery Zone also appear in Sonic the Hedgehog 3's game data.
| Sonic the Hedgehog 3/Beta Elements/Sonic & Knuckles/Lock on
||Sonic (Super Sonic, Hyper Sonic) | Tails (Super Tails) | Knuckles (Super Knuckles, Hyper Knuckles) | Dr. Robotnik | Mecha Sonic (Super Mecha Sonic) | Flicky | 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 Stage
|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
||Fire Breath | Big Shaker | Tunnelbot | Bowling Spin | Big Icedus | Twin Hammer | Hei Hou | Gapsule | Barrier Eggman | Stone Guardian | Heat Arms | Egg Mobile Hammer Ball | Flying Eggman | Red Eye | Death Ball
||Flame Mobile | Screw Mobile | Drill Mobile | Graviton Mobile | Freezer Mobile | Ball Shooter | Beam Rocket | Big Arm | Jet Mobile | Hang Mobile | Egg Golem | Hot Mobile | Knuckles | Mecha Sonic | Super Mecha Sonic | Kyodai Eggman Robo | The Doomsday Zone
||Bounce Attack | Double Jump | Propeller Flying | Glide | Hyper Flash | Insta-Shield | Gliding Knuckles Attack | Spin Jump | Spin Dash | Spin Attack | Wall Climb
Air Bubbles | Balloon | Banana | Bomb | Bumper | Capsule | Change | Chaos Emerald | Continue Monitor (Water Shield, Flame Shield, Invincibility, Lightning Shield, Super Ring, Power Sneakers, Extra Life, S, Eggman) | Ring | Signpost | Self-Propelled Bomb | Slow-Down Shoes | Snowboard | Sphere | Spikes | Spring | Star Post | Super Emerald | Switch
||Angel Island | Booster | Cannon | Conveyor Belt | Corkscrew Loop | Crusher | Debug Mode | Fireball Cannon | Flipper | Flywheel | Freezing Machine | Goal | Gumball | High-speed elevator | Jump Stand | Lava Drill | Pulley | Reverse | Ring Shooter | Seesaw | Shuttle Loop | Slot Machine | Sonic & Knuckles' Gallery | Sonic 3's Gallery | Sonic & Knuckles • Sonic the Hedgehog 3 | Spear | Spiked Ball | Spinning Top | Spinning Wheel | Strange Relief | Transport | Warp Point | Winding Tunnel | Wonderman