Does Mortal Kombat Komplete Edition on Steam give the opportunity to play for Freddy Krueger?
As it says on the store page for this game:
The newest chapter of the iconic fighting franchise is now available! Experience the deadliest tournament with all the kombatants and their unique fatalities. Players enter the realm to face the Kombatants in Mortal Kombat Komplete Edition, delivering all of the downloadable content (DLC), including intrepid warriors Skarlet, Kenshi and Rain, as well as the notorious dream stalker Freddy Krueger. Additionally, the game offers 15 Klassic Mortal Kombat Skins and three Klassic Fatalities (Scorpion, Sub-Zero and Reptile).
Mortal Komplete Edition contains all DLC released back in 2011 when it was originally released.
So yes, you can play him.