Sierra

Sierra is one of the minor protagonists in the show that is named after Sierra from Total Drama & Jude from 6Teen and was introduced in Series 14.

Character
Like Cassie, Sierra is one of the OMG party cheerleader type of girl, and Ash is her favourite student and crush. Being a party thrower, she sometimes uses Internet slang acronyms such as "LOL" or "OMG" when she converses with the others. She quite evidently spends a lot of her time with Meggy & Cassie throughout series 14. however in series 15 she started becoming mature and decided to have a crush on Jackson and mostly hung with Zoey

Avery
She doesn't have any interactions with Avery at all

Meggy
Meggy was one of her friends in series 14 but stopped hanging with her.

Ash
Her No.1 crush in the show, but he gets squished every time he got hugged by her

Zoey
Zoey was fine with her having Jackson as her boyfriend but she decided that Jackson smelt like dog so she started with Zoey

Friends

 * Meggy
 * Avery
 * Ash
 * Jackson
 * Zoey

Frenemies

 * Stella
 * Todd

Enemies

 * Timmy Turner
 * Mean Pearson
 * Meggy (Sometimes)