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 the good Majin 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.

Power
Being created from the cells of countless warriors and scientists, Android 21 is one of the most powerful Androids in the series and the most powerful female Android created though Dr. Gero's research. Like Majin Buu and Cell, she can increase her power by absorbing other life forms, which she does by turning them into sweets and eating them increasing her power. Additionally due to the cells of countless scientists she has a high IQ which my even rival that of Dr. Gero himself. This allows her to utilize Dr. Gero's research for her own purposes though her evil split personality and hunger make her dangerous. Her evil persona uses her intelligence and Dr. Gero's research to achieve her goals which presumably includes galactic conquest though it remains secondary to her impulse to feed which is her driving purpose. However her good personality uses her intellect to oppose her dark impulses. The evil 21 is very manipulative and uses her intelligence to manipulate her enemies and 16, thus she is more dangerous than Cell who while an intelligent fighter tends to rely more on his power, while evil 21 plans her moves more carefully, though eventually she gives in completely to her hunger which causes her to become more impulsive and rely entirely on her power to hunt down her enemies so she can consume them. As a result her hunger makes her similar to Kid Buu, as both are evil beings who are ruled by their destructive impulses which makes them dangerous to everyone around them, though 21's hunger makes her somewhat more predictable.


SCULPTED BY STUDIOGENESIS ARTIST CARLO NUNEZ, PAINTED BY PAUL ARMAND ( JUMBO) AND PHOTOGRAPHED BY TOYMAN!!!!