Rosianna Halse Rojas
YouTube Star
Vlogger and writer who originally found fame on YouTube, where she vlogged about her personal life, Harry Potter and more. In 2013, she became the assistant to novelist John Green.
She graduated from Tiffin Girls' School in London, England. She later attended Vassar College and the University of Exeter.
She was the moderator of the Sexism on YouTube panel at VidCon 2014. She has a self-titled YouTube channel that has reached over 50,000 subscribers.
She has two sisters.
She and Emily Graslie have both made appearances on the VlogBrothers YouTube channel.