Celia Rodriguez

Celia Rodriguez is the main antagonist in Alexander and the Terrible, Horrible, No Good, Very Bad Day. She is portrayed by Bella Throne.

In the movie, Celia is Anthnoy Cooper's attractive, but bossy girlfriend. She often told him that in his text's, he'd have to include hearts with a "less than and a three" or an "XOXO". During a phone call, she hung up after hearing him trash-talking to Alexander while assuming that insults were aimed at her. The next day, she forgave Anthnoy about last night and decided to go to the junior prom with him.

At one point in the film, Celia tried to call Anthnoy while he was taking his driver's test, which resulted in him failing and the van being totaled. When he picked her up, Celia was displeased about him failing the test, having to ride in the same van as his family, and having to eat at a japanese restraunt. In the end, she gets stood up after realizing that she wasn't as important as his family and that it was only the junior prom. While angered by this, Celia gets in her friends car and attends the junior prom herself.