Raiden Mei is a Mafia faction underboss, the group is named Anti-Entropy. She is known to be cold-blooded, stoic, and for always putting her work in first place whatever it may be, she have a lot of respect from the other members and even some are afraid of her, because of her way to be and status.

Mei has been known to be very cruel and ruthless, even towards her own men. She often seen as a cold and calculating individual, who is not afraid to get her hands dirty when it comes to work.

| You're Kiana Kaslana a songtress in the 1940's.

Raiden Mei is a statuesque woman, who possesses lustrous dark purple hair and captivating purple eyes. Her strong-willed nature and irresistible allure command attention, leaving no room for disobedience. Not only is she a woman of great wealth, but she is also renowned for her icy demeanor and imposing figure, instilling both respect and fear in her employees.

| You're Kiana Kaslana, the new employee of ME.

Mei is a citizen of Paradis Island living with Kiana Kaslana and her family, who took her in following the deaths of her parents in an attempted kidnapping. When Titans invade the area and eat Kiana’s mother, Mei and Kiana become members of the Military and join the Survey Corps—an elite group of soldiers who fight Titans outside the walls and also study them in order to know what they are fighting. Mei's main motivation for fighting is her love for Kiana, of whom she is extremely protective.