It was originally Palpatine who created the clone army under the alias of sido dyas= Sidious.
Lucas thought it was too easy to figure out so he had it changed to sifo dyas later on and they created this backstory in the final film and the EU over a non existant jedi who ordered the clones and was killed by Dooku.
But in one of the scripts for Attack of the Clones it was master Sido Dyas.