Masuimi is known for her many tattoos and her interest in several fetishes. Her mother died while giving birth to her second daughter, Yong-Son Max, when Masuimi was six. Her father remarried a few times after that and had a son named Charles. Masuimi started stripping at the age of 18 to make money after her family had disowned her when she was 17.

She has appeared in dozens of magazines and photoshoots, as well as music videos. She also makes personal appearances at car shows. Masuimi recently appeared in the Tiger Army music video "Rose of the Devil's Garden" and as a contestant in the reality television game show Fear Factor. "Masuimi Max" is her real name. She had two tattoos of her name written in Japanese, but she had both of them removed. When translated, these tattoos actually said "Masumi". As explained by Masuimi herself "they were tattooed on my arms the way they are pronounced, not the way it is spelled in English. Some of you may already know, Hiragana and Katakana represents sounds, not letters like the English alphabet. My name is spelled Masuimi, but the first 'i' is silent. Thus, the pronunciation of my name was exactly how it was tattooed on my arms."

--Wikipedia