Dr. Boris Balinkoff

Personality
Dr. Boris Balinkoff is a mad scientist who twice has tried to involve the castaways in his crazy schemes. The first time he appears, he reveals that he has discovered a way to put the mind of one animal into the body of another one, and tries to experiment on the castaways, switching their minds―Mr. Howell with Gilligan; Mrs. Howell with the Skipper; Mary Ann with the Professor and Ginger with his assistant Igor; in the end everyone gets their own personality back―except with Balinkoff who exchanges minds with a cat and Igor exchanges minds with a dog. The second time the Doctor hyponizes the castaways into becoming robots so he can rob Fort Knox―until the castaways drive him away with coconuts. Igor reapears as a monkey!

Trivia
In the first epsiode the castaways are shown escaping in Dr Balinkoff's boat back to the Island where it promptly sinks-and strands them again!

Couple Goofs-Balinkoff is puzzled to find out Igor changed places with Ginger-yet he was the only one who could have operated the machine while his two subjects are inprisioned in the machine! Likewise how can Balinkoff/cat and Igor/dog and cat/Balinkoff and dog/Igor escape from the machine when the lock is on the outside?

Vito Scotti guest starred as a japanese Sailor who lands on the Island and who doesnt realize World War II is over. {So Sorry, My Island Now} and {Diogenese, Won't You Please Go Home?}