David Vogt, best known by his stage name Charles Greywolf, is a German musician, record producer, mixer and recording engineer. He is best known as the rhythm guitarist of the power metal band Powerwolf. He runs a recording studio in Berus, called "Studio Greywolf". In 2003, along with Benjamin Buss he created Powerwolf. They decided to take on pseudonyms and build up backstories around those (David Vogt – Charles Greywolf, Benjamin Buss – Matthew Greywolf). Soon, they were joined by the rest of Red Aim. He joined Flowing Tears in 2007 and has been in Red Aim and Heavatar. As a record producer he has worked on albums by Autumnblaze, Demon Incarnate, Dying Gorgeous Lies, Gloryful, Godslave, Hammer King, Hatred, InfiNight, Kambrium, Lonewolf, Messenger, No Hope, Noctura, Powerwolf, The Last Supper, Tortuga, Turin Horse, Unchained and Vintundra.