Star Kids

Twinky Star and Sparky Star, more commonly referred to as the Star Kids, are sentient toys, who aid Sophie in missions sometimes.

Abilities
Their alter egos are Agent K (Twinky) and Agent 9 (Sparky). Agent K has tiny nunchucks which only tickle, not hurt, and Agent 9 has a tiny drill, which digs tiny holes that Sophie cannot fit through, but the Star Kids can. Despite their lack of usefulness in battles, their spying skill makes up for it. Since they can spy on Becky without getting caught, they possess the element of Surprise.

Twinky
Twinky is loyal and helpful to Sophie, although she can be a smartmouth. She is quite cheerful and upbeat, as well as optimistic, always looking on the bright side of things. Twinky is the more level headed of the duo, although she can still become just as loud and reckless as Sparky get into arguments with her. She is quite brave, and is better at  spying than Sophie, since the Star Kids can actually successfully escape with useful information on their enemies.

Sparky
Sparky, on the other hand, resorts to panicking and she often overreacts to little things, and is more naive than her twin. Despite this, she is loyal and has a kind heart. She also tends to worry a lot, although her twin forces her to face her fears, and she is still braver than Sophie, being able to spy on their enemies successfully and actually escape with useful information without being spotted. Sparky is an extreme pessimist is contrast to Twinky's optimism.

Trivia
The rest of the cast believe that Twinky and Sparky do not exist, instead believing that they are figments of Sophie's imagination. However, since they retrieve useful information for her, this proves that the toys are indeed sentient.

The Star Kids are loosely based on the creator's own toys she had as a kid, known as the Woos.