Kiki was, alongside Nana and Rara, the Pokémon Norman gave to Ruby before the events of the fourth chapter. Kiki is known to have won many Contests for Ruby in the Johto region before her introduction.
Kiki made her debut alongside Ruby's other Pokémon in Vs. Cacnea. Ruby later used her to help Mumu in training his appeal skills, but without much success. Later, she was sent out when a wild Crawdaunt attacked Mr. Briney and his Peeko wasn't able to battle as her beak was shattered by Crawdaunt's Shell Armor Ability. Kiki was able to defeat the Crawdaunt with her Cute Charm Ability.
She evolved in Granite Cave alongside Nana after touching Steven's Moon Stone, where she was used to prevent the wild Mawile from escaping Steven's trap. Ruby mentions that she became even cuter after evolution. Kiki was also used in battle when Ruby decided to face Norman after being found by him in the Weather Institute, however in this battle she was only used to lure Norman into a corner, in order to allow Mumu to deliver the real attack.
Kiki easily won the Normal and Super Rank Cuteness Contests. She was also used in an unofficial Beauty Contest against Wallace, but was defeated. She won the Hyper Rank of the same category when Ruby traveled to Slateport after his fight with Sapphire in Fortree City. She was used again in the battle against Archie and Maxie in Cave of Origin alongside Ruby's and Sapphire's other Pokémon. Kiki later won the Master Rank of the Cuteness Contests.