Petunia is one of the students, she's a popular student just like Bubble, she's very afraid of the teachers(Miss Circle, Miss Thavel and Miss Bloomie), when the lights are on, it means that the teachers would stop killing students but if the lights are off, it means that the teachers would go killing students except for the good teachers(Miss Emily, Miss Sasha and Mister Demi), Petunia is taking pictures with Lizzy in the hallway

Petunia: "you go girl!"

Lizzy: "you too girl!"