Karl Jacobs aka GamerBoyKarl - is an American YouTuber and Twitch streamer famous for participating in MrBeast's challenge videos. He is also a member of the Minecraft server Dream SMP. Karl started and gained popularity from MrBeast, and soon was invited to join the Dream SMP. He joined Minecraft Championship 11 and 13. Karl stated he is scared of dogs and loves cats with all his love. YouTuber cursor with Karl Jacobs.