Keke Simpson is one of the main characters in [[The Amazing World of Gumball|The Amazing World of Kevin and Jake]]. Anais is the youngest and most intelligent member of the Simpson family. Despite being only five-years-old, she attends Preschool next to high school with her older brothers, Kevin and Jake. She is also Olivia's best friend and they have a sleepover together at Olivia's house..
Keke is a small girl. She resembles her father, Alan, but she is much shorter in stature and has a more feminine appearance. Anais usually wears an orange dress with a white trim and white socks. She is one of the only Wattersons to wear footwear, along with Jake, Kevin and [[Granny Hannah|Granny Hannah]].
Keke is by far the most intelligent member of her family, although her young age prevents her from really being noticed by adults. She has been shown on numerous occasions to have a knack for solving problems, such as the time she figured a way out of her flooded house, and the time she developed a complex solution to solve the problem of getting her grandmother's luggage up a flight of stairs.
Even though Keke is five-years-old, she attends Preschool because of her extremely high IQ; however, she is not in the same class as her brothers and instead goes to a junior kindergarten class located elsewhere in the school. Anais is also a valued member of the school's Physics Club, and her vast knowledge of the subject has actually saved her from being vaporized by an enormous bully. She is so smart that the only person smarter than her is Mark.
She is a remarkably cunning strategist as well, revealed in the episode The Sister, plotting elaborate schemes and decoying everybody's perceptions to achieve her goal. Though she is often underestimated due to her significantly young age, which she tends to use to her advantage.
Keke can also be considered the most mature member of her family aside from her mother. She often takes care of her brothers in many ways, like helping them with their homework and making their breakfasts.
Keke has shown some signs of having her mother's fiery temper. When her brothers accidentally lost her doll, she was extremely upset and demanding, threatening to tell their mother what had happened. On another occasion, after finally taking Granny Hannah's bags upstairs, when asked to bring them down she instead grew furious and kicked her suitcase out the window.
Even though Keke' is very mature for her age, there are still some occasions where she reverts to childish behaviour. She is a huge fan of Milla and Marko, as evidenced by her Milla and Marko plush toy and her extreme enthusiasm for the Milla and Marko on Ice show.