This is the Proto-Hoplyte This is a military endeavor to replace humans on the battlefield by the United Nations. It went rogue after being exposed to one of the time shards. It is unknown what properties it has been given apart from becoming a temporal anomaly. It has traveled back in time and may have some semblance of sentience. Be warned, subject could pose extreme danger if approached. It does not have feelings, it does not understand mercy.
Quite fun to make, hope this can fit in to the story, I mean you did have a shard for future and past