The Soviet Union (CCCP) controlled East Germany until November 3, 1990. At that time, it was integrated with West Germany under the rule of the Federal Republic of Germany in whole.
Well, Adolf Hitler named Karl Donitz his successor (he was the leader of the Kriegsmarine prior to that), but after he signed the surrender of Germany, the Allies had control of all of Germany.
After the Allies left in 1949, however, the Berlin Wall went up, and two new powers rose with two new leaders.
West Germany was lead by Theodor Heuss, and East Germany was lead by Wilhelm Pieck.