Blue, gray, red
Circus ( サカス Sakasu ) ? is an enemy that appears in  . It is a model of Sonic Advance 2 badniks created by Dr. Eggman and appears in Music Plant.
They have a similar, if not almost identical, appearance to
Kiki, only it is colored dark blue. Most of its body is dark blue, and its hands, shoulders, and feet are colored gray. It has an orange and gray circus ball, hence its name, that has the Eggman Empire logo on it.
Circus' name comes from its circus ball it holds from attacking the player.
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Sonic ( Super Sonic) | Tails | Knuckles | Cream | Cheese | Amy
Dr. Eggman | Vanilla | Guard Robo | Chao | Animals ( Deer, Elephant, Flicky, Gorilla, Koala, Kangaroo, Lion, Mole, Parrot, Peacock, Penguin, Rabbit, Sea Otter, Seal, Skunk, Swallow)
Zones Leaf Forest | Hot Crater | Music Plant | Ice Paradise | Sky Canyon | Techno Base | Egg Utopia | XX | True Area 53 | Special Stages
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
EggHammerTankII | Egg Bomber Tank | Egg Totem | Aero Egg | Egg Saucer | Egg-Go-Round | Egg Frog | Super Eggrobo Z | True Area 53 boss
Amy Dash | Boost Mode | Bound | Chao Attack | Chao Rolling Attack | Crouch | Double Spin Attack | Drill Claw | Double Punch | Flying | Grinding | 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)
Gimmicks and obstacles
Bumper wall | Cannon | Checkpoint | Dash Panel | Fan | Gravity Control Switch | Grind Rail | Gymnastic Bar | Iron ball | Jump Panel | Pole | Rotating platform | Spikes | Spring
Box ( 1-Up, 5 Ring Bonus, 10 Ring Bonus, Attack, Brake, Confusion, Invincibility, Maximum Speed, Mosaic, Random Ring Bonus, Ring Magnet, Shield, Warp) | Chaos Emerald | Ring | Special Ring
Auto Running | Chao Bounce | Chao Search | Corkscrew loop | Freeze | Time Attack | Time Over | Tiny Chao Garden | Shuttle loop | Winding Tunnel