He used to visit a TAPOPS all time to perform his skills to the audience at TAPOPS. However, the audience got bored of his performances, thus the audience run when they see new performers that interest them, making Jugglenaut revenge to them because the new performer steals his audience.
He first appears in Episode 12 as a shadow, feeling glad that Jokertu has accomplished his duty and that the TAPOPS members are unaware that there is a stowaway in their headquarters, stealing the Power Spheres.
He plays a major role in Episode 13, where he first activates and programs the stolen Power Spheres: BalloonBot, CementBot, and FireBot, into his will. He later spies on BoBoiBoy and his friends who have just arrived on Planet Circus. He spotted Ochobot and realizing that he's a Power Sphere, he plans to add him into his collection. He finds out the powers that BoBoiBoy, Yaya, and Ying have thanks to TargetBot, but he still punishes TargetBot for failing to defeat them.
He finally reveals himself in Circus Maxima and introduces himself to the heroes. However, the heroes state that they have never heard of him, not even Tarung did. This made him angry. He uses BalloonBot to attack the heroes while his Power Spheres cheer for him. He then uses CementBot to trap the Ying, Yaya and BoBoiBoy. BoBoiBoy was freed by Gopal's food sniper. BoBoiBoy tries to stop him but he was hit hard and crashed into the circus walls. Jugglenaut attempts to steal Ochobot until Fang and Captain Kaizo intervene.
Fang tells BoBoiBoy to rest. Kaizo immediately attack Jugglenaut until he used Firebot against Kaizo, though Kaizo could still overpower him, and was able to free all three Power Spheres. Jugglenaut then uses NoseBot to increase his body size, surprising everyone. Jugglenaut defeats Kaizo and leaves Fang with an injured leg which makes BoBoiBoy use Thunderstorm against him. However, due to his powers' instability, Jugglenaut is still able to overpower him until Kaizo uses Amber Power to help BoBoiBoy finish him.
Jugglenaut abilities are draw from a Power Spheres, his abilities are:
- BalloonBot: A Power Sphere that allow Jugglenaut to use balloon power.
- Balloon Power (Kuasa Bebelon): Jugglenaut blew a balloon in his mouth and formed the balloon into another form. This balloon is very sensitive to touch because it will explode when touched.
- CementBot: A Power Sphere that allow Jugglenaut to use cement power.
- Petrifying Cement (Simen Pengeras): Jugglenaut unleashed the hardening cement toward his enemy to trap them.
- FireBot: A Power Sphere that allows Jugglenaut to use firepower.
- Gas Spray (Semburan Gas): Jugglenaut spat out a thick gas and picked his finger that caused the fire to fire in the entire Colosseum.
- Flaming Breath (Semburan Api): Jugglenaut emits a flamethrower from his mouth to the enemy. He uses this on Kaizo.
- Maximum Blast (Sambaran Maksima): Jugglenaut spit a fireball to the ground and emerged the fire from the ground to the enemies he wants. He uses this on Kaizo when he uses a barrier.
- NoseBot: A Power Sphere that allow Jugglenaut to increase his size anytime he wants.
- Gigantic Punch (Tumbukan Gergasi): Jugglenaut punch an enemy with his powerful fist. He use this on Kaizo.
- Gigantic Twin Punch (Tumbukan Gergasi Berkembar): Jugglenaut punch an enemy with both of his hand. He use this on Kaizo.
Jugglenaut has collected 15 Power Spheres; 2 Power Spheres used by his group members, while 9 other Power Spheres are unknown. After his defeat, all Power Spheres have been taken by TAPOPS.
- CardBot (Used by Jokertu)
- InviBot (Used by Panto)
- MelonBot (Used by Jugglenaut)
- GigiBot (Used by Jugglenaut)
- TargetBot (Used by Jugglenaut)
- NoseBot (Used by Jugglenaut)
- Jugglenaut has similar names with Juggernaut, a fictional supervillain appearing in the X-Men Comics. Coincidentally they both have similar looks; A gigantic appearance, big muscle, strong, and also take an antagonist role. indicate Jugglenaut is the homemage of Juggernaut.
- Juggle is a pun on juggernaut, a powerful force, which refers to how strong he is, and "Juggle", which is a common skill for clowns.
- His name, along with MelonBot and GigiBot, are revealed in the end credits.
- He is the third known Power Sphere Hunter since Bora Ra in BoBoiBoy: The Movie and Captain Separo in BoBoiBoy Galaxy.
- It's revealed that his nose is a Power Sphere, which make him become bigger whenever he wants.
- Unlike other clowns, he has only four fingers.