The Soviet Union's "Q"
You've probably heard of a electronic musical instrument called a "Theremin". It was named for its inventor, a Russian named Lev Termin, who Gallicized his name to "Leo Theremin" while he was living in France, during which time he invented the instrument. He returned to the USSR and was drafted by the secret police (I don't quite recall which name it was going by at the time) and, in time, he became the chief gadgetmaker for the organization which most of us recall under the initials "KGB".
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