Lily, is Maxwell's sister, and second main character in the Scribblenauts series.
Scribblenauts Unlimited Edit
At the beginning of the game, Lily and Maxwell, are the only children of their family left. After being given a Globe, that can take her anywhere, while Maxwell got his notebook they became spoilt. Their parents decided, to let them face the challenges of the world, by sending them out. When Maxwell played a trick, on The Hungry Beggar, he turned Lily to stone, and Maxwell revived her by collecting Starites. It turns out in the end, that The Hungry Beggar was just their dad in disguise, trying to teach Maxwell a lesson.
Scribblenauts Unmasked Edit
In Scribblenauts Unmasked, Maxwell and Lily, fight over whether Superman or Batman is better. They end up, getting sucked into, the Comic Book World where they have to deafeat Maxwell's enemy The Dopleganger.
She is the only character, to have a voice actor She is voiced, by Jenifer Hale, in the prologue of Scribblenauts Unlimited