At one point Princess Iron Fan married the Demon Bull King had a son together, whom they called Red Son. MK also mentions the Monkey King using Princess Iron Fan's magic fan. During a fight Monkey King later sealed away her husband for, leaving her and their son to try to find a way to free him for the next five hundred years.
Princess Iron Fan is first seen when MK accidentally walked in on her and Red Son making the final adjustments to free D.B.K. However, she and Red Son notice Bob attempting to pull the Golden Staff off a mountain but ended up having his arms ripped off as result. Princess Iron Fan then watches Red Son telling Bob that only people who are deemed worthy can lift the Monkey King's staff before watching him going to free the Demon Bull King himself. Although, once Red Son noticed nothing happened after he was able to pull the staff off the mountain, he questions Princess Iron Fan if she knew what mountain trapped the Demon Bull King until the aforementioned person was freed. When Demon Bull King asked Princess Iron Fan on how she freed him, Princess Iron Fan attempts to speak before being interrupted by Red Son. When Princess Iron Fan discovers that MK was overhearing the Demon Bull Family's conversation, she watches Red Son attempting to kill MK to show the Demon Bull King how powerful he became. When MK block Red Son's punch with the staff, Princess Iron Fan was surprised that MK was able to lift the staff and used it. After MK used the staff again, Princess Iron Fan tells him to hand the staff over, but only for the former to escape.
At the Flaming Foundry, Princess Iron Fan tells the Demon Bull King not to get mad at Red Son for failing to retrieve the Golden Staff, as she already sent out Bull Clones to look for the staff.
When the Demon Bull King was taking his anger out by destroying parts of the Flaming Foundry, Princess Iron Fan tells him to calm down and be patience.
At the Flaming Foundry, Red Son tells Princess Iron Fan about the prize of the Great Wall Race. However, Princess Iron Fan rejects Red Son's idea, as she and the Demon Bull King would rather dig up the energy source they discovered than get one of the Peaches of Immortality. Although, Princess Iron Fan and the Demon Bull King changed their minds at the last minute.
During the race, Princess Iron Fan and the Demon Bull King had to go through a mountain to complete the race, as they couldn't get through one of the race's quickturns. However, when Princess Iron Fan mentions the Demon Bull King's experiences with mountains, the Demon Bull King had no other choice but to forfeit the race.
After the Bull Clones were able to dig up the tomb, the Princess Iron Fan attempts to figure out how open it after the Demon Bull King failed to. However, she wasn't able to open it as well, as the tomb required a magical key to unlock it.
When MK was able to get the Skeleton Key from Red Son, Princess Iron Fan arrives and engages in a battle with MK and Mei until she overpowers them, allowing Red Son to get the Skeleton Key again and escape with Princess Iron Fan.
Once Princess Iron Fan and Red Son were able to retrieve the Skeleton Key, the Demon Bull King uses it to unlock the tomb. However, Princess Iron Fan and Red Son discovered that there was nothing inside until a blue spirit went inside the Demon Bull King's Armor, taking control of the Demon Bull King and the Bull Clones.
She is intelligent, cold and ruthless. She, like her family, wants to rule the world and bring eternal darkness to it. She enjoys taunting her son when he fails on killing MK or retrieving the Monkey King's staff and seems indifferent with him most of the time. However, she does have a softer side as she seems to genuinely loves her husband, calmed him down when he was about to chastise Red Son for losing the staff and quickly retrieved both of them when MK was about to defeat them.
She looks like a normal, human woman with long, black hair with half of her hair done in an updo that resembles a bull's horns and two hair loops with the rest of it loose. She wears a golden headpiece, a red, two piece dress with golden trimming that leaves her midriff exposed. She also wears red lipstick and has a beauty mark on the right side of her face.
Names in other languages