Jonatas "Joe" Penna (born May 29, 1987), known on YouTube as MysteryGuitarMan, is an American/Brazilian Musician born in Sao Paulo
He has many videos featuring stop motion animation and uses household objects to make videos. In almost all his videos, he puts his sunglasses on. He currently lives in Hollywood with his friends.
His most successful video is 'Guitar Impossible', which has over 15 million views and was featured in YouTube's 2010 countdown. He was once in the top five most subscribed YouTube channels of all time. He has collaborated with Shane Dawson, Smosh and Ray William Johnson in his videos. He uploads videos onto YouTube twice a month although it varies sometimes. He also has t-shirts for sale.
He has made a cameo appearance in the Real Annoying Orange series as 'MysteryPotatoMan', obviously a pun on his nickname.
Joe was born in Sao Paulo, Brazil. In 2011, he married Sarah Evershed.