Gakkimin is pink with a minty-green face. He has 2 yellow trumpets for his arms, sky-blue piano keys for his conveyer-wheel-like legs, 2 sky-blue tubes on his neck and a yellow cymbal on his head. He also has white markings.
For his Bugmin ego, see: Bug-Gakkimin
As a Bugmin, his mouth is fixed into a crazy smile with his toungue showing.
Gakkimin is a carefree Promin. Whenever he hears music or plays music, he becomes cheery and starts dancing. When Gakkimin makes a noise, he says 'San! San!' or 'Pa-pa-pa!' with a cute, childish tone of voice.
In the series
Gakkimin was one of the Promins who got captured as Bugmins and debugged by Wanda prior to the beginning of the series.
In episode 9, Gakkimin was one of the Promins who got kidnapped by Bug-Liftmin. He got rebugged in episode 10. Bug-Gakkimin messed around Jii Yoda's sweet shop along with Bug-Micmin after Gigaga delivered them to Jii Yoda. Later, he got recaptured and debugged by Yuto who was also capturing and debugging Bug-Liftmin.
- Gakkimin is one of the Promins that can play music. The other one being Recordmin.
- Gakkimin was featured in the Kamiwaza Promin-Zu segment in episode 30.
- Gakkimin resembles musical instruments.
- On the Promin list, by numeral order, Gakkimin is numbered 002 and comes after Turbomin.
- In the original Kamiwaza Wanda season, Gakkimin was captured and debugged as a Bugmin by Wanda prior to the beginning of the original season. That was until episode 10.