The routine is performed by an all-female dance crew who wear circus-related fashion.
P1 is a clown. She has a light blue and lavender afro, heavy black eyeshadow, a red neck covering, a lavender/light blue clown outfit with a red midsection, leg suspenders, lavender leggings with red polka dots and black high heel boots and an arm covering representing the glove.
P2 is the a feline tamer or woman dressed as a cat. She is seen wearing a black ponytail with cat ears and red facepaint. She has a red tiger-pattern one-piece suit with the left leg off. She has red high heels on.
P3 is a mimic or a jester. She has an orange bob with a mini witch hat with a large yellow cotton ball. Over her left eye there is blue face paint in the shape of a diamond. She has a yellow-and-blue diamond pattern outfit. She has red pants on with a blue left leg and a yellow right leg. She wears black high heel boots.
P4 is the ringleader. She has dark curly hair and wears a black top hat. She has a long black coat on over a black bra. She has black high waisted short shorts on. Seen in large high def images, she wears fishnet tights. She also wears strapped-on high heels.
The Extreme dancer is a program dancer. She wears glittery purple pants with black high heels. She wears a tank top with orange and black stripes, which has long sleeves. She has blonde hair, which is neck-length. She also wears a purple glittery police hat.
The routine takes place on what looks like a circus stage. There are multiple spirals on the floor that starts out pink in the bridge but turns red during the chorus. During the rest of the song, it is purple with blue circles. When the dancers move around the stage to change positions, the spirals move with them as well. The platforms behind the dancers also light up sometimes in tune with the beat. Flames can be seen in the background when the word "Circus" is sung in the lyrics. At the same time when it is said, the very back of the stage lights up to reveal the word Circus.
The routine takes place on a stage with several red lights which can be seen throughout most of the verses. The background also changes to pink and fuchsia with the addition of some pink smoke. During the chorus the stage becomes red with a triangle showing the dancer performing in the middle.
There are 4 Gold Moves in the Classic routine: Gold Moves 1 and 3: This Gold Move is a right-to-left Wave Gold Move. P4, raise your right arm and hold your waist with your left one. P3, Bring your right foot one step forward and at the same time, point P4 with your left hand and cover it with your right one, creating the same shape. P2, Bring your right foot forward, unbent while squatting and at the same time, make a tiger's-claws-like movement with your hands. P1, Open your legs slightly and at the same time, hold your right hand next to your head's right side and your left hand next to your torso's left side, in a way that your wrists will face each other diagonally. Gold Move 2: P1, P2 and P3, strike your right hand at an angle towards the right. P4, crack a whip. Gold Move 4: It is similar to the first Gold Move but is done together. This is the final move of the routine.
Gold Moves 1 and 3
Gold Moves 1 and 3 in-game
Gold Move 2
Gold Move 2 in-game
Gold Move 4
Gold Move 4 in-game
There are 3 Gold Moves in this routine, all of which are the same: All Gold Moves:Jump in the right and at the same time, raise your right hand and hit and then lower it and do the same with it facing the ground.
Some of the choreography is taken from the music video.
Additionally, P4 resembles Britney Spears in the Circus music video while the other dancers resemble the backup dancers.
P1 was teased on Facebook through a colored silhouette.
P3's avatar has red hair while the coach has orange hair.
The second time Walk This Way (Old School) appears in the Mashup, she appears bigger in size than her other appearances in the same Mashup.
In the square and the coach selection images for the extreme version, the dancer’s glove is more green than cyan.
Vogue and Waack steps are danced in the Extreme version of the song.
According to the new Britney Spears remake, the line "I run the right s**t" is replaced with "I run a tight ship".
In the Mashup, the dancer from Don’t You Worry Child blends into the background, barring his glove, due to the structure of his design.
All four of Circus’ coaches appear at E3 during Just Dance 2017’s segment while performing Don’t Stop Me Now.
The Extreme version of this song was played during the Grand Final of the Just Dance World Cup 2015.
According to the Behind-the-scenes interview with Alkis and Veronique, the Classic coaches are respectively named "Bada** Clown", "Feline Tamer", "Romantic Harlequin" and "Ringmaster Madame Loyal".
Thus, they are the third, fourth, fifth and sixth coach in the series to have names (excluding the ones based off characters from movies or video games); they are preceeded by "Frost Princess" and "Magma Princess".