At first, it seemed Blaire was an ordinary girl with an ordinary life. She seemed as typical a teenager as her friends with her large variety of online accounts and the way she spoke. She seemed to be the most mature of her friends as she was constantly trying to stop them panicking whenever they succumbed to Laura's fear-mongering. She appears to have a very good relationship with her boyfriend Mitch and genuinely loves him, planning to "lose her virginity" to him at prom

Born in Fresno, 17 year old Blaire comes off as a sweet and humble, however it's all proven to be a cover as it's revealed that she is actually revealed to be deceitful, cowardly, and unfaithful. She had sex with her boyfriend's best friend named Adam and later had more physical intimacy with him to see if it was "something more." She filmed the video of Laura collapsed with fecal matter decorating her inner thigh and made hateful comments that led to Laura's unaliving. Her actions resulted in her friends' deaths when they played "Never Have I Ever", with the main question being: "who posted the video of Laura Barns?" It's also proven when she was ready for each of her friends to die, but not her boyfriend.

Laura possesses Blaire while she’s on a Skype call with Mitch, Jess, Val, and Adam