- "'Cool'... Is that important in Sensha-dō? The most important lessons in life are all condensed into Sensha-dō. But most people don't realize that."
Mika is an average height girl with brown hair and a pair of light brown eyes. She wears a Finnish väinämöinen hat and carries a kantele with her at all times.
She is a calm and refined lady who often gives cryptic proverbs, similar to Darjeeling, but unlike her, she doesn't explain them. Mika has carefree spirit who seems very independent.
It is revealed in Drama CD that under this charming lady hides a thief. She kept a KV-1 lent by Pravda instead of returning it and after the match against Selection University she "borrowed" some of the rations kept in the University's reserves (a possible reason for why they left before the end of the match).
She then appears with Aki observing the match of Ooarai/Chi-Ha-Tan vs Pravda/St.Gloriana. She joins the Ooarai Compound Team against University Select. Along with Aki and Mikko in their BT-42, she helps the Hetzer, CV.33 & Type 89B in taking out the Karl-Gerät 040 by distracting and disposing of its escort of three M26 Pershings. She is later seen in her boat along with Aki and Mikko, but doesn't stay until the end of match.
- Her thief personality attribute may be linked to Finland's usage of captured enemy equipment and tools.
- She seems can't stand without her hat for a long time.
- She always brings a kantele (a Finnish string instrument) and often plays the Säkkijärven Polkka on it.
- Mizushima tweeted that her kantele music acts as "active sonar" for her crew-members that didn't reach the tank's visors. It's unknown if said tweet was canon info or tongue-in-cheek.
- Was joked about being related to the Shimada family by some of the fans of GuP. This theory is non-canonical, but there are several very interesting similarities.
- Both their appearances and personalities are very similar.
- Display great prowess in Sensha-dō.
- Extremely aloof in general.
- In an official illustration, they are both at the beach with the Nishizumi-sisters.
- Like her teammates from Jatkosoka, she might be inspired in one of The Moomins original Swedish Mumintrolls characters, with Mika being Snufkin.
- Mika's birthday is the November 30th, the same date in 1939 as the beginning of the Winter War.