Peke

Lala's all costume robot, who acts as a module to form her clothing. Peke is exceptionally devoted to Lala and has the ability to shapeshift into any kind of clothing for her to wear, but this also drains her power supply. As her batteries run out, the clothing Lala wears will slowly dissolve, until it completely disappears. To recharge, Peke simply needs to sleep. Using a dress-form program, Peke has the ability to take on a human form, with the appearance of a young girl. Peke was ofter refered to as a boy in early manga chapters.

Personality
Peke is loyal to Lala, but can also be quite helpful towards others who are friends to Lala, such as fixing their clothes, and helping Mikan recover her bag from a robber by enabling her to fly in costume form. Peke is generally polite, addressing people with the respectful honorific "-dono". However, she can also be quite blunt about what she thinks of other people.

Relationships with Other Characters
Lala Satalin Deviluke 

As Lala is her creator, it goes without saying that Peke is greatly loyal and obedient to Lala. Peke is Lala's most constant companion, and has been with her since her creation and when Lala ran away from home. While Peke considers Lala as a great person, admired for her beauty and intelligence, and finds any suitor unworthy of her, Peke is still aware of some of Lala's eccentricities. She questions Lala's judgement in choosing Rito as her fiancé, and her attempts at getting closer to him. And she says that despite being one of the greatest geniuses in the galaxy, most of Lala's inventions turn out to be pranks.

Rito Yuuki  Peke does not think very highly of Rito as the fiancé of her Lala-sama. Though she doesn't particularly hate or tolerate Rito, at first, she finds him quite dull, dorky and unreliable, bluntly saying so, and encouraged Lala to think more seriously about who she chooses to marry. As time passed, though it's not clear what she now thinks of Rito, Peke at least stopped worrying about Lala marrying Rito, and congratulated Lala when Rito confessed his love for Lala.