Inferno X was the designation Agent X was given when he went undercover into Dr. infero's crime ring in Mission Evil World. He leaded Mission Airforce succesfully, but instead of giving the Mountain Minder (Goal of Mission Airforce) to Inferno, he wanted to control Inferno's mind and getting the control about Inferno's organisaion. He was killed by Dr Inferno, cause of his inacteptable betreal.