(Rejected movie script)
Joseph Frost was a member of the S.T.A.R.S. Alpha Team under the command of Albert Wesker.
Arriving at Arkley's mansion, Alpha Team was attacked by zombified dobermans and shepherds. Despite the team's overwhelming firepower, a dog pounced on Joseph when he tripped. Wesker killed the dog with a wave of rounds from his M-16, but the animal had already chewed out Joseph's heart from his back.
Due to the decision to completely restart the writing process, George A. Romero's writing contributions failed to appear in the finished script, and so Joseph has no canonical equivalent in the Anderson universe.