Mister Hyde

Dr. Calvin Zabo was a morally abject but brilliant medical researcher who was fascinated by the effect of hormones on human physiology. One of his favorite stories was Robert Louis Stevenson's 1886 classic, Strange Case of Dr Jekyll and Mr Hyde. He was convinced that the experiment in the story could actually be performed (and indeed Jekyll's story was a true one, although it had been reported as a fiction), and obsessed with the idea of unleashing his full bestial nature in a superhuman form. However, he needed money to do this so he robbed his various employers systematically. Though too intelligent to be caught, the medical community was suspicious of his tendency to always be employed by organizations which were subsequently robbed. He sought work as a surgeon in a hospital where Dr. Donald Blake was a directing physician, yet Blake would not allow him a job due to his history. Zabo was enraged that Blake would not give him the position, even though he did indeed intend to rob the organization. He swore revenge on Blake. Zabo was eventually successful in creating the Hyde Formula, and turned into a huge, Hulk-like creature he called "Mister Hyde", named after the Mr. Hyde in the book. In this new form he found he had vast superhuman strength, enabling him to crush cars and tear through steel as though it were made of cardboard. With his new superhuman powers he sought out Blake, who transformed into Thor and beat him senseless. In response, Hyde began committing robberies disguised as Thor.[​6] He next kidnapped Donald Blake and Jane Foster and even though he was once again defeated by Thor, he managed to escape because Foster had hidden Thor's hammer, fearing that if Hyde was captured, Blake would be killed by a time bomb Hyde had set. At some point Hyde fathered a daughter with a prostitute named Kim Johnson. The girl Daisy, was put up for adoption after birth, subsequently manifesting superpowers due to her mother's Inhuman lineage. She eventually became a member of S.H.I.E.L.D. under the codename of Quake.