Overlord Larmark is a scientist from the 21st century who is interested in world domination, and needs powerful generals to lead his armies. He looks to the ancient world, as only that time period has the generals with the charisma and strength of will to do what must be done. Using scientific shennigans, he invented a time machine to go back to the past. Unfortunately it is a one way trip, and he must bide his time to make it back to the present.
It is an undisputed fact in the scientific community that traits gained during a person's life are inherited by their offspring. He takes sperm samples from world conquerors ( Julius Ceasar, Temujin, Alexander the Great, etc), and stores them using cryogenics similar to the methods used in the 21st century. When he gets back to the current period, these superbabies will be grown in artificial wombs and raised by Larmark to prepare them for world conquest.
The diabolically master plan worked, and the superbabies have been born. However, storing sperm for thousands of years in this fashion has never been done before, and only someone as intelligent as the overlord could have accomplished it. What abnormalities or problems can possibly result in these children due to this process?