Riddles Random Riddle: 8-26-2014 August 26, 2014June 17, 2014 gags I am called white. My duty is to protect and destroy. All it takes is a sneeze and I will destroy. At the sign of a cut I will come to protect. I will fight to my death no matter how insignificant it may be. I am very helpful yet you can’t see me. What am I? Show answer A white blood cell.