Zuzumin is yellow with sky-blue hands, a peach face, a red ram's-skull-like helmet with grey-blue eyes, sky-blue feet and red markings. Zuzumin also has an indigo whistle stuck on his mouth. His right hand resembles a whip.
Zuzumin is a very friendly Promin. Zuzumin can be a bit naughty sometimes. He can manipulate animals with either his whip-hand or his whistle. He can also send in his droplets. When Zuzumin makes a noise, he makes a 'Zu' sound with his childish voice.
In the series
Zuzumin was one of the Promins who got captured as Bugmins and debugged by Wanda prior to the beginning of the series.
Zuzumin first appeared in episode 2 as he was summoned by Yuto. He stopped the animals released by Bug-Kagimin from rampaging the school grounds. After Yuto captures and debugs Bug-Kagimin, Zuzumin guides the animals back into the zoo.
Zuzumin was summoned again in episode 4 in which he sent in some of his droplets to stop Bug-Railmin, giving Yuto the chance to catch and debug him.
Zuzumin was rebugged in episode 10 and he sent in some animals in Nicole's radio station. Later, after capturing and debugging Bug-Jetmin, Yuto captures and dubugs Bug-Zuzumin along with the other rebugged Bugmins as well as capturing and debugging Bug-Liftmin.
In episode 26, Zuzumin fused with Railmin throughout the Kamiwaza Shaker by Yuto, becoming Zurumin. He lured in the circus-acting seals and elephants from around the world to confront Bug-Coromin.
In episode 33, Zuzumin tried to manipulate Bug-Origamin's origami animals but they didn't listen to him. Zuzumin then became upset.
- Until episode 26, Zuzumin has been playing tricks on Railmin, a Promin belonging to the Buruburu attribute.
- Zuzumin resembles an animal-tamer.
- Zuzumin is Yui's favourite Promin.