However, his powers can vary, depending on the demands of the story; he's sometimes knocked unconscious or rendered temporarily immobile by the villain, only to rise again by the end of the cartoon and save the day. In some films, he uses X-ray vision and psychokinesis. He was also able to turn back time in 1946's "The Johnstown Flood". Other cartoons, like 1945's "Krakatoa", show him leaving a red contrail during flight that he can manipulate like a band of solid, flexible matter.