Migi appears as a guinea pig member of the idol group OTMGirls during the third season. She possesses light beech and white fur, large black pupils each featuring a single curled eyelash, and cheeks that bloom with distinctive rosy pink. Her hair is styled in twin ponytails secured by white and pink plaid bows. Migi's typical attire is a white schoolgirl uniform, complete with a matching white and pink plaid bow at the center, a coordinating skirt, long white socks, and shoes.

She consistently exhibits a cheerful and pleasant demeanor, mirror-paired with her fellow group member Hidarin. Migi is predominantly depicted alongside Hidarin, reinforcing their close association within the group. Her name translates directly to the Japanese word "右" (meaning "right"), reflecting her consistent placement on the right side of the OTMGirls formation during group appearances. A noted habit is her consumption of candies prior to taking the stage for performances.