Igor Grozick was a Soviet spy sent to discredit the United States. Grozick dressed up in a bear costume and approached American scientists at the site of a nuclear test, pretending to be a bear that had been given human intelligence and speech by the nuclear radiation. After becoming a scientific sensation, Grozick intended to reveal his deception in order to make Americans look foolish and gullible to the rest of the world, only to find, after removing the costume, that the radiation he had been exposed to at the test site had turned him into an actual talking bear.
Years later, Grozick returned, having been part of a group of 1960's era Soviet agents who had been put into cryogenic sleep in order to be woken up in the event of a nuclear attack on American soil. After an explosion set off by the Infernal Man off the California coast woke them up, Grozick and his fellow Super-Soldiers fought, and were defeated by, the Order.