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.