Did the Darkling Create the Fold?

The Darkling is an extremely dark and manipulative person. He is power-hungry and had created the Fold with merzost, in order to use it against his enemies. In the process created the Volcra which prevented him from expanding it.

Who created the Shadow Fold?

So who created the Fold? As foretold in the beginning of the series it was the Darkling, a Shadow Summoner (a Grisha with the ability to conjure darkness) from the bloodline of the Bonesmith, a Grisha with immense power who wielded it for his own gain. This Darkling created the Shadow Fold.

Who created the fold?

But it's revealed later the Fold was created by the Darkling, aka General Kirigan, played by Ben Barnes. He's been living among the Grisha while secretly hiding his identity as the centuries-old villain. Just like the Fold, he's a form of evil who has been around so long, everyone is now used to him.