René Benoit (or "La Grenouille"- the Frog) was a French arms-dealer.
Much of Benoit's past remains shrouded in mystery but what is known is that he was born in France.
He later married Dr. Helen Berkley with the marriage producing three children, one of them being Dr. Jeanne Benoit.
Presumably during their marriage, Beneoit opted to become an international arms dealer with Benoit himself becoming one of the biggest arms dealer in the world and earning the nickname, "La Grenouille"/the Frog.
This would presumably cause a huge strain in his marriage with Helen and the two ultimately divorced.
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Benoit was a tall man in his late fifties, early sixties with slightly gray/silver hair and brown eyes.