Bernhold Renner is a doctor and a member of S.H.I.E.L.D..
Renner studied Iso-8 to discover its capabilities in human cloning. He was captured by R.A.I.D. and tortured into revealing everything he knew about Iso-8. Due to the nature of his research, he believed that they planned to use the element to create an army of clones. He was later rescued by Captain America and questioned about his captivity by Black Widow.
- Serpent Society