Chi-Chi is the princess of Fire Mountain and the daughter of the Ox-King. She is the wife of Goku and becomes the loving mother of Gohan and Goten. She was first introduced as a shy, sweet and fearful girl, but later, as she gets older, develops a very tomboyish, tough and fierce personality, which sometimes causes her to have angry outbursts seen several times throughout the series. Despite this, she has shown her love for Goku and their sons many times throughout the series. Chi-Chi is a light-skinned, slender woman of average height. She has long, straight black hair reaching mid-back with short square bangs, and black eyes. Chi-Chi primarily wore a purple dress with an orange cloth tied at the top and a yellow sash. Her hair was styled in a high bun with strands hanging down on the sides. She kept this hairstyle. She kept this hairstyle through the Androids Saga but switched to a purple uniform with pink sleeves and pants. Chi-Chi is also noted to have a relatively small chest. As a child, Chi-Chi was very shy and sweet. She often thought about who she would marry. Despite being the daughter of the Ox-King, known for his fearsome reputation, Chi-Chi is portrayed as his complete opposite, as she was shown to be of pure heart by being able to ride the Flying Nimbus. In battle, she is often frightened and defeats her opponents while crying. When she became an adult, especially after marrying Goku and having her son Gohan. She is often depicted as nagging, temperamental, overprotective, tough and well-meaning, with a feisty and tomboyish personality, similar to the stereotypical overbearing shōnen mother. Although Chi-Chi is often seen yelling at Goku over fighting, and Gohan over his schoolwork, it cannot be disputed that she loves Goku and her family very much. She usually cries when she finds out Goku is injured or dead, or when he's home safe, clearly showing love for her husband. Even though Chi-Chi disapproved of Goku preferring Gohan learning to fight than being socialized, she nevertheless showed herself to be easily angered when her husband and her son got disrespected due to this, she instead kicks him out due to his extremely abusive actions towards Gohan, such as openly whipping him in front of her and openly declaring that Gohan was a monkey with no potential. Although Chi-Chi is insistent to Goku that Gohan's studies are more important than anything in the world, she, along with the rest of the characters around them, goes into shock when Goku actually agrees with her. She even goes as far as checking his temperature to make sure he was feeling well. This suggests that despite her often nagging him to think or do something besides fighting with their son, she actually prefers her husband the way he is. She is notable by emphasizing on Gohan's "academic achievement" rather than his fighting ability, as she was hesitant for Gohan to repeat Goku's habits of getting into danger, and she also did not want Gohan to grow up without proper education as Goku had. Therefore, she often becomes frustrated when Goku decides to take Gohan to fights, so much that often Chi-Chi is willing to go to battle herself to defend her son, though she's always restrained by some of the other characters to keep her from getting herself killed; nonetheless, it is often implied that Chi-Chi is proud of Gohan whenever he does fight but refuses to admit it save for when he participated in the World Martial Arts Tournament and Intergalactic World Tournament. In some cases, her insistence that Gohan study can also impact her common sense. However, Chi-Chi apparently grows more accepting of Gohan fighting, as she allows him to train because of the androids and attend the Cell Games, even though she did not want him to participate. Henceforth, she taught Goten martial arts apparently out of a desire to prevent him from being incapable of defending himself whenever needed, just like her father did with her and showed extreme strictness on it equaling how she was with Gohan about his education. Chi-Chi also allowed Gohan (and Goten) to participate in the 25th World Martial Arts Tournament, although part of the reason she allowed this was because she was excited to see Goku again for the first time in seven years and because winning the tournament or even being the runner-up would allow Gohan to obtain enough money to pay for his college tuitions. Chi-Chi has a somewhat negative opinion of Super Saiyans as she seems to associate the transformation with delinquency due to its hair color. When she first saw Gohan in his Super Saiyan Full Power form shortly before the Cell Games and mistakenly assumed that Gohan and Goku had dyed their hair (which is considered a sign of delinquency in Japanese culture), unaware that it was a result of the transformation. Though she comes to understand that it's a Saiyan transformation, she retains her initial negative opinion of the Super Saiyan form as she reacted negatively when Goten transformed while they were sparring.

Son Gohan is the elder son of Goku and Chi-Chi. Unlike his father, Gohan is a brilliant scholar and lacks a passion for fighting, preferring to do so only when his loved ones are threatened.

Son Goten is the youngest son of Goku and his wife Chi-Chi, making him a Saiyan and Earthling hybrid. Goten is Gohan's younger brother and Trunks' best friend.