The Geji-geji (ゲジゲジ Gejigeji?) is a model of Badnik created by Dr. Eggman that appears in Sonic Advance 2's Egg Utopia.
They are centipede-like robots that crawl slowly through the air between the floor and ceiling. Pop them on their spike-free noggins.
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||Sonic | Tails | Knuckles | Cream | Cheese | Vanilla | Amy | Dr. Eggman | Guard Robo | Chao | Animals (Deer, Elephant, Gorilla, Koala, Kangaroo, Lion, Parrot, Peacock, Penguin, Rabbit, Seal, Sea Otter, Skunk, Swallow) | Flicky
||Leaf Forest | Hot Crater | Music Plant | Ice Paradise | Sky Canyon | Techno Base | Egg Utopia | XX | True Area 53 | Special Stages
||EggHammerTankII | Egg Bomber Tank | Egg Totem | Aero Egg | Egg Saucer | Egg-Go-Round | Egg Frog | Super Eggrobo Z | True Area 53
||Balloon | Bell | Buzzer | Circus | Flickey | Geji-Geji | Gohla | Hammerhead | Kiki | Koura | Kubinaga | Kura-Kura | Kyura | Madillo | Mon | Mouse | Pen | Piko Piko | Spina | Star | Straw | Yado
||Amy Dash | Boost Mode | Bound | Chao Attack | Chao Rolling Attack | Double Spin Attack | Drill Claw | Double Punch | Flying | Hammer Attack | Head Slide | Homing Attack | Jump Dash | Mid-Air Glide | Mid-Air Hammer Swirl | Propeller Flying | Spin Attack | Spin Dash | Spiral Attack | Skid Attack | Step Attack | Super Hammer Attack | Super Skid | Super Sonic Boost | Super Tails Swipe | Tail Swipe | Wall Climb
|Mid-Air Trick Actions
||Big Air (Happy Spring, Hop Jump, Petit Step, Spiral Upper) | Long Wind Jump (Burning Straight, Humming Top, Sweet Roll, Window Jump) | Stop 'n' Slam (Bound, Drill Claw, Mid-Air Hammer Swirl, Propeller Descent, Soft Bomber) | Quick Reverse (Back Attack, Back Rotor, Back Star, Milky Turn)
||Auto Running | Bumper wall | Cannon | Chao Bounce | Chao Search | Chaos Emerald | Corkscrew loop | Dash Panel | Freeze | Gravity Control Switch | Grind Rail | Gymnastic Bar | Item Box (1-Up, Attack, Brake, Confusion, Invincibility, Magnetic Barrier, Mosaic, Power Sneakers, Shield, Super Ring, Warp) | Pole | Ramp | Ring | Shuttle loop | Special Ring | Rotating platform | Spikes | Spring | Star Post | Time Attack | Time Over | Tiny Chao Garden | Winding Tunnel