The T-1000 is a major antagonist in the 2015 film Terminator: Genisys. It is a mimetic poly alloy cyborg sent by Skynet to kill Sarah Connor and Kyle Reese & also Sarah's foster father, the T-800 Guardian. The assassin holds the ability to morph his form allowing him to form weapons out of his body & the ability to morph it's body is similar to previous models.
He was portrayed by Lee Byung Hun who plays Park Chang-yi, Storm Shadow and Han Cho Bai.
It can be seen during the final battle.