Igor Drenkov (Earth-616), Marvel Database

Igor was a Soviet spy sent to America to learn the secrets of the Bruce Banner's Gamma Bomb for future purposes of the Soviet Union. When Rick Jones drove out on the test field, Banner asked Igor to postpone the test while he got the kid to safety. Igor, hoping to be rid of Banner in order to steal his secrets, continued the test and the Gamma Bomb exploded, creating the Hulk. Later, when Bruce turned into the Hulk for the first time, he went to Banner's lab and found Igor looking for the Gamma

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Igor Drenkov (Earth-12041), Marvel Database

Leader Character: Most Up-to-Date Encyclopedia, News & Reviews

Igor Drenkov, Marvel Animated Universe Wiki

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Igor Marvel Database+BreezeWiki

Igor Marvel Database+BreezeWiki