"A simple class for you today," Doom said, kicking things off. And then he rose off the ground while his cloak started to billow.
"In simple terms, my armor contains a jetpack. Strictly speaking, that term is incorrect. The propulsion is not jet-based, else my garments would be on fire at this moment," Doom said. Strictly speaking, that wasn't true either. He fought the Human Torch on the regular
and this particular set was made from unstable molecules. It wouldn't have a problem with heat. "If you'd like to turn yourself into a human rocket, due to explode with any miscue, use miniature jet engines. Those of us who intend to live will use safer means."
( Yes, Doom absolutely judges Hope Summers and her jetpack. Foolish child. )