Unlike her quiet and reserved owner, Crackle is loud and outgoing, and breathes fire when excited. She is a bit too protective of Clover.
She became acquainted with Clover while Sofia and Vivian worked on their class project in "The Shy Princess", but Clover did not like her at first because of her fire breath, and was afraid she would set him on fire. But the next time he and Sofia came to visit, Crackle had set up a picnic of shish-kebabs for the two of them and used her fire breath to roast the food, which made it tastier, and Clover decided that maybe Crackle wasn't so bad after all.
In "Blue Ribbon Bunny", Crackle is shown to possibly have a crush on Clover, since she showed jealousy towards Ginger when she praised Clover, and got in her way when she was trying to get Clover's attention during the parade.
In "Finding Clover", Crackle showed up in Enchancia just to see Clover. When Sofia tells her that he's run away, Crackle goes with her to find him. She even breathes fire on Boswell's foot just to save him!
In "Scrambled Pets", Crackle is brought to school by Vivian, just as Sofia, James and Amber bring their pets. After a mix-up potion is accidentally spilled on them, Crackle becomes a rabbit, and Clover becomes a dragon. They have trouble with their new forms at first, but soon get to grips with them, gaining a better understanding of each other in the process. After they change back, Crackle expresses a desire to do it again, even sneaking out another vial of the mix-up potion.
In "The Leafsong Festival", Crackle wants desperately to sing in the festival, but is unable to due to her fire breathing. For a chance to sing Crackle, gives up her fire to Cedric. She is overjoyed to be able to sing, but with minor relectuance, takes her fire back in order to melt the Forever Frost that covered Enchancia and save Mia. In the end she uses her fire to create an image of her in the sky during the festival.
- For some reason, Crackle seems unable to talk to other humans besides Sofia (whose amulet allows her to speak with Crackle) when the Dragons of Enchancia clearly were able to talk to Sofia, Amber, Cedric, and Princess Ivy.