Andreas von Strucker and his sister Andrea were Mutant who became the international criminals known as Fenris during the 1950s and '60s, committing atrocities with their destructive powers in places such as Rio de Janeiro. Andreas' son Otto, who inherited his father's abilities, recognized the danger his family's powers posed to the world, and made it his life's work to discover a way to suppress the X-Gene. Although Otto's work was successful in suppressing his son Reed's mutant abilities, Andreas' and Andrea's powers again manifested in Reed's children Andy and Lauren.
- 2 members of Fenris (Earth-TRN674)
- 2 appearance(s) of Fenris (Earth-TRN674)
- 1 minor appearance(s) of Fenris (Earth-TRN674)
- 4 mention(s) of Fenris (Earth-TRN674)