Several vault dwellers were changed into super mutants, and they forcibly mutated the other normal humans thus, all the members of Vault 87 were changed into super mutants, or killed.
Not long after the vault dwellers moved into Vault 87, the vault overseer and security guards began testing with FEV. Fawkes was one of the original residents of Vault 87, and possibly went by the name of Shelton Delacroix, who was a Vault security officer.
