Kid Reactor (Modern)
Kid Reactor is a young superhero who possesses impossible mobility and substance mimicry. He first put on the mask to fight Isotope, a villain created by the same accident that created him, because Kid Reactor is immune to the N-rays Isotope emits. KR keeps a secret identity because he is afraid the government or scientists want to quarantine him.
KR's mother is minor super-scientist Vivian Hawkray, who suffered as a result of her own experiments and is dying of cancer. Kid Reactor is currently on a team with Harvester, Hashtag, Pillar, and Marshal Theodora.