Cheryl is a real estate agent hired by Dr. Doofenhsmirtz to sing his new evil jingle. ...

Candy is one of Mabel's best friends. Candy is shy, insecure and does some strange things, such as taping forks to her fingers as an ...

Zoe is Max's older sister who is occasionally dragged into her brother's adventures. Max doesn't think very highly of her, and...

Katie is Greg's older sister. She is very smart, and does her best to keep Greg out of trouble. ...