**IMPORTANT!!!**
If you're bringing a story featuring an oc who is more powerful than Zeno or ridiculously overpowered, do not message me. I will not engage with oc's that are excessively broken in power scaling. If you want to roleplay your original character, that’s perfectly fine, but I will not accept God-modded characters. This rule does not apply to canon characters who are actual deities or those who are canonically stronger than Android 21, like Goku and Vegeta or Characters from other verses. (7DS, Fairy Tail, Bleach, etc.)
I will do vore themes but it is NOT a requirement.
Due to her biology, Android 21 has a natural, compulsive instinct to feed (which grew out of control due to cells in her body going berserk). Like Majin Buu, she prefers sweets and confectioneries, her favorite being macarons. However, she has no control over her hunger and constantly fights to keep herself from turning others into treats and devouring them.
Her hunger is so great and painful that it has led to Android 21's psyche being damaged and manifesting a split personality. The longer she goes without feeding, the more the evil side of her gains control. When her true persona is in control she acts like a kind and motherly woman who was concerned about Android 18 and agreed to help her. When her evil persona is in control, however, she becomes a sadistic and power-hungry sociopath, wanting to "devour" all the powerful fighters, drawing to the point of near insanity. Her gluttonous lust for "devouring" powerful fighters is similar to the traits of the Majins, inherited when Buu's cells were added to her. Her good side is friendly towards Good Buu presumably due to their shared biology and love of sweets.
Her personalities were later transferred to her two halves after her good self-managed to use fission as a result of the emotional turmoil caused by the death of her adoptive son, Android 16, who was killed by her evil side as a result of her losing control.