Mun-Mun is the president of the Northern Ostendel branch of the Skull Lease and head of the Clean Aku trio. A 26 year old Chinese woman with high ambitions and low self-esteem, she is probably the most refined of the Time Bokan villainessses.

She is the only member of the branch that actually cares about the company, and it’s poor performance has earned her the scrutiny of the presidents of the other branches, especially from Tamashiro Kakure. Her true agenda is to work her way up to the top so she can usurp her boss Con Cordo, take over the Skull Lease, and conquer the world.

Due to the constant pressure, Mun-Mun’s very quick to gloat if things go according to plan and just as quick to blow a gasket if things go awry. And while not as physically abusive on her lackeys and more patient when it comes to doing any sort of activity, she’s very verbal if they go against her wishes.

Mun-Mun spends most of her worktime in her office musing to herself, and she sometimes partakes in oddball activities in there as well, usually as some form of motivational exercise or stress relief. When the trio are out to wreck the plans of the Time Lease crew, she’s usually collaborating with Kosuinen on how to stop them.

Speaking of which, Mun-Mun is often butting heads with Kosuinen, both in regards to work ethic and how to deal with Ippatsuman. She does get along with Kyokanchin pretty well, even though he’ll sometimes side with Kosuinen and she’s also the only one that barely puts up with Min-Min. Aside from the Clean Aku trio, she holds Tamashiro and the Time Lease crew in disdain and cares little for anyone else apart from “Mr. X”….

One day the Clean Aku trio are rushing to get to work when Mun-Mun falls onto the path of a subway train, luckily saved in the nick of time by a mysterious man. Immediately falling in love with him, Mun-Mun expresses a desire to see her “Mr. X” again, whom she identifies as Sokkyu Gou by the 25th episode. During the second half of the series, a string of espionage attempts against the Time Lease furthers her interest in him.

This story arc comes to a conclusion in episode 44, The End of Mun-Mun’s Love. On the behalf of her boss Con Cordo, Mun-Mun invites Gou and the orphans from the orphanage he grew up at to a Snow White themed Christmas party, taking sheer delight at recreating the moment where the prince kisses her to wake her from a spell. Unbeknownst to everyone, even her, it was a trap set up by Tamashiro and Agent 000 to expose Gou as Ippatsuman, killing him if he doesn’t confess.

Furious at being manipulated, she and the rest of the Clean Aku trio attempt to stop them to no avail, fleeing when Ippatsuman seemingly arrives. (who is actually Gou’s colleague Haruka standing in for him) Feeling that any good faith between her and Gou is lost, she hesitantly chooses to give up pursuing him. Later on, she makes one last attempt for Gou when it appears he and Haruka are getting married with no luck, but becomes optimistic when it’s discovered that it was a cover.

Any chance of her making it big are dashed when the entire Skull Lease falls into bankruptcy because of her branch’s ineptitude, with her final payment being an advert for online dating. After the ensuring chaos that shortly followed, she leaves Ostendel City in the hopes of turning her life around for the better, with Kosuinen and Kyokanchin unknowingly on the same train as her.