Mimi Iwata (岩田モモ) is Panda's owner and Kana's second cousin twice removed. She is a kindergarten-grade student and the only major human character who can talk to the Ham-Hams. Her parents are carpenters as Panda mentions in "Calling All Ham-Hams!". She doubts her abilities often, requiring the Ham-Hams to encourage her.
- The implication behind her being able to talk to the Ham-Hams may be that she is too young to understand that hamsters shouldn't be able to talk to humans. However, the truth behind the hamsters' talking abilities are inconsistent across episodes.