Shadow Spark Optimus Prime toy
http://news.tfw2005.com/2017/01/10/shadow-spark-optimus-masterpiece-movie-bumblebee-official-images-330837
My guess is it's a reformatting the Creators give to Optimus, similar to what Unicron does to Megatron in TFTM, enslaving him in return for a means to revive Cybertron.
The reformatting is similar to Dark Energon, judging by the dark deco with purple eyes.
07/08/06... 786... the sentinel of Allah has arrived.