Crackle is introduced as a rather obnoxious squirrel from the great influence that Gleaner held over her. But once she saw Gleaner being more interested in pleasing Lady Aspen than being her friend, Crackle becomes more good natured. She dreams of being a hero and wants to be friends with everyone. However, despite her faults, she is a loyal and kind animal.
After she get the work as a cook she changed personality and is very loyal to the kitcen and more want to die that the kitchen should be messy.
Crackle is first seen with Gleaner as they tease Urchin about his would-be destiny of starting work at the harbors while Gleaner would get to work in The Tower.
Crackle try's very hard to become good friends with Urchin, Needle, Juniper, and Fingal. Needle starts to like her, but Urchin still feels uneasy about her.
When she finds out that Linty kidnapped Catkin, she looks for her for days. Crackle wants to to be the one to find Catkin, since all her other 'friends' are heroes.
When Fingal finds the decaying fish, she runs to the tower to inform the king .
When she finds out what happened to Fingal, she is very worried. She takes the blame, but Fingal is happy about it. He thanks her, and he hugs her and Scatter.
When Crackle comes out of hiding in the kitchen after the Raven's attack on the Tower's kitchens, she's distraught at the sight of her trashed kitchen, but slowly brings herself to start cleaning.
She later helps Needle to fortify the Tower corridors by dumping cooking oil and soapy water all over the floors.
She makes caramells for Fingal.