Yellow is quite naive and acts very much like a little child. She hates it when Pokémon are injured, hers or her opponent's, and has developed a style of battle in which neither her nor her opponent's Pokémon are hurt unless it is absolutely necessary.  However, when enraged, her Pokémon's levels and powers increase, raising her Pokémon's levels up to level 80-90.

Her special skill is Pokémon healing; she can heal them with just a touch, thanks to her heritage, Thanks to that ability, she had earned the title "The Healer".