Bester is the underthinking twin sister of Best. Described as “spontaneous and empathetic,” Bester comes up with ideas easily. She has a cheerful, optimistic, and sensitive demeanor and a passion for her interests. However, she feels the need to help even those who don’t want it, and tends to blame her brother Best for a lot of situations. 

She and Best change their bodies each episode and are left with each body they changed into until the end of every episode of "*Best & Bester*".