To create new enemies you need to override the Enemy class :
Then, you can create a new row in a data table of type EnemyDatas :
If you do that, you can directly fill the InitializationDataTable and KeyInInitializationDataTable variables of the Enemy to points the row inside this data table to initialize the enemy with the right datas.
Alternativly, you can directly setup your Enemy with all datas (Setup the DefaultWeaponRight/LeftHand but also the StatsComponent/LootComponent/... of the enemy).