Sierra is the yandere to Cody in Total Drama series.
With blogs dedicated to every member of the cast and personal information extending as far as their dental records, Sierra is Total Drama's biggest fan. Being a blogger, she sometimes uses internet slang such as "LOL" or "OMG" when she converses with the others. She quite evidently spends a lot of her time online; as shown by how dependent she is on the internet. Aside from blogging, she also plays an MMORPG (Massive Multiplayer Online RolePlaying Game). Whenever deprived of the world wide web, Sierra will devise questionably-insane methods to compensate, such as using a pizza box as a laptop during Total Drama World Tour or having a mental breakdown when her smartphone is broken in Total Drama All-Stars. Sierra admits that a great amount of her knowledge and her multiple skills have been garnered from the internet, her family, or a relative of another contestant. She seems to be a maternal person, having adopted two animals and referred to herself as their mother. She is generally polite, enthusiastic, and easygoing, however, she can also be aggressive and violent, especially when Cody and Cameron are threatened.