Tessa Violet Williams (born March 20, 1990), better known as Tessa Violet and Meekakitty, is an American video blogger and singer-songwriter best known for her YouTube channel. Growing up in Oregon, she performed in theater while in high school. Tessa graduated as a member of the National Honor Society from Ashland High School on June 6, 2008.

She started vlogging in 2007 at the age of 17 for a school project and began to do so daily when she traveled to Hong Kong and Thailand as a fashion model. Though her channel began as a video blog, she has since shifted her content to include fan-made music videos for well-known bands including Relient K, Family Force 5, and Mika, as well as original songs. By 2009 Violet quit modeling completely, dropping the topic from her channel.

For years she used the catchphrase "Mind Geek" as reference to her stereotypically "geeky" interests such as Digimon, Star Wars, Star Trek, Doctor Who, Harry Potter, and The Legend of Zelda. As of late, however, Violet has retired the phrase choosing to focus more on her musical career as opposed to working on Youtube.