Fan Casting Karl Igor in The Return Of Frankenstein

Frankenstein's hunchbacked former servant. Feeling guilt for the part he played in Victor's experiments, and for not stopping him sooner despite his growing worries, Karl leaves his original home to find employment elsewhere, becoming destitute. On a chance encounter one day, he sees Frankenstein alive, and attempts to flee to inform the police, but is caught and kidnapped by Frankenstein and his new accomplice. They eventually decide to transfer his brain into a new body, believing that he'll be grateful to them and not reveal their escapades if they suceed.