Starlow (known as Chippy by Bowser) is a character who has appeared in Mario & Luigi: Bowser's Inside Story. She is a Star Sprite who helps Mario and Luigi by giving hints and holding items. She has a similar role to Stuffwell from the previous game. Her name is a portmanteau of the words "star" and "yellow".
 Mario & Luigi: Bowser's Inside Story
In Mario & Luigi: Bowser's Inside Story, Starlow is sent to Princess Peach's meeting as a representative of the star sprites. Starlow believes that the cause from the Blorbs was from Blorb Mushrooms sold by a man in a gray cloak. Later, she is inhaled into Bowser, along with Mario, Luigi, and other citizens of the Mushroom Kingdom. She has the same purpose as Stuffwell does in Mario & Luigi: Partners in Time: helping Mario and Luigi. Also like Stuffwell, she holds the Mario Bros. items and equipment. However, the difference between Stuffwell and Starlow is that she has a demo version of all the abilities learned throughout the game. She can combine her powers with Princess Peach to levitate people, such as Bowser, and also help Mario and Luigi to perform certain action commands. Starlow often talks to Bowser from inside of him to give him information. Starlow uses Chippy as her name for Bowser, not wanting him to know that she is helping the Mario Bros. She also helps Mario and Luigi in their encounter with Bowser. She can also save the player from nearly unavoidable attacks from bosses like Bowser, the Dark Star and the Dark Star Core, by having Mario and Luigi grab her feet so she can fly up to the top screen.
Starlow appears to have negative feelings towards Luigi, and this negativity towards him sometimes generates humorous results, such as when Starlow angrily knocks Luigi into Alpha Kretin after Luigi suggests that Starlow fight it alongside Mario rather than him. She only demonstrates this when Luigi is acting particularly cowardly.
At the end of the game, when Bowser hears Starlow's voice, he easily recognizes her as Chippy and gets furious, deciding to pick a fight with the Mario Bros. and her. When Bowser and Peach's Castle were remodelled, Starlow and Birdley deliver a present to Bowser from Peach as a thanks for all he did, and they have a small chat, ending with Starlow teasing him and him yelling at her to leave his castle, which she does.
 Mario & Luigi: Dream Team
Starlow is confirmed to return in Mario & Luigi: Dream Team. Her full role has yet to be confirmed, but she is shown to be the one who causes Luigi's in-dream reactions by pulling his mustache or pushing his hat down.
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